Best Ai Anime Art Generator

Best AI Anime Art Generators in 2025–2026: A Practical Guide to High-Quality Outputs

The field of AI art has matured, with multiple tools tuned to anime aesthetics that deliver crisp line work, vibrant color, accurate anatomy, and flexible styling. After years of rapid experimentation, the ecosystem now offers reliable performance, clear licensing paths, and accessible interfaces for hobbyists and studios alike. This guide highlights leading options, explains how to compare them, and provides actionable prompts to maximize quality. The coverage reflects the state of the market through late 2025 and into 2026, with notable releases and updates from major providers such as Midjourney, NovelAI, and Stable Diffusion ecosystems.

What makes a top AI anime art generator in 2025–2026

Quality in this space hinges on several factors: resolution and detail, fidelity to anime design cues (line work, eye style, hair texture), control over pose and lighting, speed of generation, and the ability to handle multi-character scenes without losing cohesion. Tools built for anime use often feature specialized prompts, style tokens, or dedicated variants tuned to Japanese visual sensibilities. They also differ in how they handle upscaling, background complexity, and consistency across frames for animation work. Providers publish roadmaps and policy updates that address licensing for commercial use, safety policies to govern content, and APIs that integrate image generation into workflows. These elements help buyers align a tool with their typical output size, budget, and project scale.

Leading options for 2025–2026

Midjourney with anime-focused variants (Niji) — This pairing remains a favorite for cinematic, high-detail anime graphics. The model line includes versions optimized for Eastern aesthetics, with refined prompt rendering and improved handling of expressive features. Access is via Discord or Midjourney’s web interface, with switches to the anime variant to emphasize eyes, line work, and color harmonies. Official updates show continued refinement and better handling of complex scenes.
Niji variant on Midjourney’s platform — In parallel, the platform hosts a dedicated channel and community resources where artists share prompts, compare results, and test new features. Real-time upscaling and variant tooling are part of the workflow, making it a strong option for illustrators who want consistent style across a set of images.
NovelAI Diffusion V4.5 — A model designed specifically for anime art, with multi-character prompting, action tags, and improved natural-language understanding. The system supports multi-character scenes in a single pass, which is useful for character interactions, group shots, and story panels. Access and pricing are shown on NovelAI’s site, and many users note reliable consistency for character design and dynamic posing.
Stable Diffusion anime models — The open ecosystem features several community-trained checkpoints optimized for anime aesthetics, including Anything variants, DiscoMix, OrangeMixs, and others. These models run locally or on consumer GPUs, offering privacy, cost control, and flexible experimentation. They pair well with established prompts and VAE options to attain varied textures and color palettes.
Waifu Diffusion X and related forks — Focused on character-centric anime output, these models provide fast batch generation and broad coverage of character archetypes. They are popular in hobbyist circles and small studios where prompt-driven iteration is common.
Artbreeder Anime — A long-running option that blends genetics-based generation with interactive editing to explore character silhouettes, palettes, and stylistic variants. It supports rapid concept exploration and iterative design, particularly in the early stages of a project.
Anime plugins and cross-style tools — In the broader space, anime-focused plugins and cross-style capabilities appear across major platforms, expanding options for prompts and cross-pollination of styles. Users can draft scenes with one tool and refine visuals with another, facilitating a multi-tool workflow.

Note: The landscape features a mix of commercial and open alternatives, each with its own licensing terms and usage rights. Always review the current policy on the official site before producing commercially used images. The sources above provide contemporary context for the options listed here.

Table: Quick comparison of top tools

Below is a concise comparison of prominent options as of late 2025, highlighting strengths and typical output contexts.

Tool	Core strengths	Ideal use	Max output size / quality controls	Access & cost model
Midjourney (Niji variant)	Specialized anime rendering, strong eye detail, cinematic lighting	Character portraits, manga panels, concept art for animation	High-res builds with in-tool upscaling; consistent anime feel	Discord-based, subscription tiers; experiment-friendly
Niji variant on Midjourney	Dedicated flavor for Eastern aesthetics; improved prompt fidelity	Series visuals, scene sequences with cohesive styling	High-detail outputs with upscaling options	Same access framework as Midjourney
NovelAI Diffusion V4.5	Multi-character prompting, action tags, natural-language understanding	Story-driven art, dynamic group scenes, character interactions	1024x1024 default; upscale paths available	Subscription-based access
Stable Diffusion anime models	Open, flexible, local control; multiple forks	Private projects, rapid prototyping, customization	Hardware-dependent; local processing enables privacy	Free or community-driven; requires setup
Waifu Diffusion X	Fast, character-focused generation; broad character library	Character studies and quick iterations	Varies with prompt and model; common ranges 512–1024 px	Community/free or low-cost forks
Artbreeder Anime	Genetic blending with interactive edits	Concept exploration, style experiments, early visuals	Browser-based outputs with multiple variants	Free tier; paid features for expanded options

How to craft prompts for high-quality anime art

Crafting prompts that yield cinema-grade results involves clarity and precision. Start with a clear subject and pose, then layer in style cues, lighting, and context. For example, describe the character’s silhouette, outfit, and facial expression in concrete terms. Add lighting notes such as “rim light,” “neon backlight,” or “golden-hour glow” to shape mood. Specify the camera angle and focal length to guide composition, then indicate the desired finish—sharper line work for action scenes or softer shading for emotional moments. If your tool supports style tokens or references, include those that reflect the target aesthetic, such as a specific anime era, studio, or artist reference. Finally, include negative prompts to discourage unwanted elements (for example, avoid anatomical distortions, extreme props, or background clutter) when the tool supports them. Combining these elements helps push results toward the level of polish seen in professional concept art and animation design.

Prompts: practical examples

a confident female samurai in a neon-lit alley, sharp line art, vibrant colors, large expressive eyes, dynamic action pose, cinematic lighting, manga panel composition, 4k
two rival mages facing off in a rain-soaked street, reflective surfaces, high-detail textures, soft shading, dramatic backlight, 2D animation style, anime studio reference
chibi girl with oversized hat, pastel palette, gentle shading, playful pose, sunny day, soft bokeh background, cuteness-forward aesthetic
old-school mecha pilot in a retro-futuristic city, crisp lines, high contrast, color grading inspired by classic anime, wide-angle view
team of adventurers around a campfire at night, warm firelight, shot from eye level, authentic facial expressions, cinematic atmosphere

When prompts are paired with a capable model, these prompts translate into dense detail, expressive faces, accurate anatomy, and cohesive color schemes. For multi-character scenes, specify relationships and interactions with action tags or positional notes if your tool supports them, and make sure to iterate with upscales and variations to lock in the look you want.

Tips for maximizing quality while controlling costs and licensing

Choose a model that aligns with the primary output you need—single-character portraits, dynamic group scenes, or multi-panel manga layouts. Each tool excels in different areas, and the best result often comes from a targeted choice rather than a one-size-fits-all option.
Use upscaling and refinement steps to push fine details without requiring a full re-render. Most modern tools include built-in upscalers or provide seamless export paths to higher-resolution pipelines.
Experiment with color palettes and lighting in staged prompts before finalizing a scene. Consistency across frames benefits from repeating key descriptors (character lines, eye style, hair highlights) while varying backgrounds and mood to maintain visual interest.
For commercial projects, review the terms of use on each platform. Some providers offer commercial licenses or marketplace terms that impact how you can monetize generated visuals. When in doubt, consult the official site or support team.

Ethics, licensing, and best practices

As the availability of AI-generated anime art expands, clear policies around licensing, attribution, and content safety become essential. Platforms that tailor models to anime aesthetics typically publish guidelines that address commercial rights, model provenance, and user responsibilities. Artists can take advantage of these rules by selecting tools with transparent terms and by documenting any third-party assets used as references. While licensing conditions vary across providers, keeping a careful record of prompts, model versions, and usage rights helps ensure compliance and protects creative investment.

Real-world workflow ideas for 2025–2026

Many studios and independent artists adopt a multi-tool workflow to balance strengths. A typical setup might start with an anime-focused generator for concept art and character sheets, then move to a diffusion-based model for background experimentation, followed by refinement in a local deployment with a Stable Diffusion fork to preserve privacy and reduce costs. Using NovelAI or Midjourney for initial explorations can quickly yield several directions, after which a chosen direction is refined via stable-diffusion-based models on a capable PC. This approach blends speed, cost control, and creative flexibility, enabling a steady cadence from concept to final visuals. The ecosystem supports this pattern through compatible export formats and accessible upscaling pipelines.

Final thoughts

As we move through 2025 and into 2026, the best AI anime art generator is not a single tool but a carefully chosen set of options that fit a creator’s project profile. For character-driven work with strong facial expression control, Midjourney’s anime variants and related platforms provide compelling results. For narrative-driven art and multi-character scenes, NovelAI Diffusion offers robust prompting and scene-building features. For private, edge-case experiments or cost-conscious workflows, Stable Diffusion forks deliver flexibility and control. Across all choices, the key to success lies in precise prompts, thoughtful composition notes, and a workflow that leverages the strengths of each tool. With careful planning and regular updates, artists can maintain high standards while expanding their creative horizon in 2025–2026.

Key features

🎨

Real-time style control

Fine-grained real-time style control lets creators switch moods, palettes, line weights, and shading on the fly while preserving core character traits. Users can test bold neon looks or soft watercolor tones without restarting projects. The interface provides precise sliders, preset templates, and visual previews, enabling rapid iteration toward a signature anime vibe that fits any scene across light and shade.

🖼️

High fidelity anime aesthetics

Engine builds crisp linework and accurate shading to reproduce iconic anime aesthetics at scale. It preserves character silhouettes, eye expressions, and hair gradients while avoiding over-smoothing. Users can push contrast, adjust cel shading, and refine backgrounds without bleeding details. The result stays coherent from sketch to final render, suitable for posters, sequences, and fan projects. Perfect for dynamic poses alike.

🗺️

Diverse era and genre presets

Presets span classic shonen, slice-of-life, cyberpunk, fantasy, and modern school aesthetics, giving artists quick access to authentic atmosphere. Each preset adjusts lighting, texture, color grading, and line style to match the chosen era, while allowing tweaks for originality. You can mix influences, test retro palettes, and craft scenes that reflect varied storytelling traditions From neon nights to quiet mornings adapts.

🧩

Create unique prompts for characters, outfits, expressions, and surroundings

Create unique prompts for characters, outfits, expressions, and surroundings. The generator interprets each instruction with consistent look, allowing iterative refinements without re-describing every detail. You can lock features, swap outfits, or swap backgrounds while retaining pose and personality. This flexibility supports collaboration, concept testing, and rapid prototyping of multiple character moments. Prompts map clearly to outfits, hair, stance, and settings.

🔧

Robust upscaling and refinement

Built-in upscaling sharpens output while preserving line integrity and color accuracy. Pixel-level detail is enhanced without introducing artifacts, making works suitable for print and large displays. The tool refines rough edges, balances contrast, and increases resolution selectively, so initial sketches stay visible beneath final polish. Users can batch-process sequences for consistent quality across frames. This saves time on large projects.

♻️

Consistent character retention across frames

Maintains character details across sequences, preserving distinctive features like eyes, hair color, outfits, and marks. The system applies a stable identity model, reducing drift between frames. Artists can create motion, dialogue, and scene changes without re-annotating facial traits, ensuring continuity for ads, trailers, or episodic animations. This reduces rework, speeds iteration, and keeps brand identity intact across scenes for teams.

✨

Noise reduction and clean linework

Noise suppression and crisp linework produce clean silhouettes and readable textures. The engine minimizes grain in flat areas and smooths out jitter without sacrificing character nuance. Fine-tune edge sharpness, contrast, and halftone patterns to achieve professional looks. This helps rapid prototyping while delivering polished frames suitable for reels and social content. Users can preview results before export to verify polish.

🛡️

Safe and ethical content filters

Built-in safety filters prevent generation of harmful or copyrighted material, while promoting respectful depiction and consent. The system flags sensitive prompts and provides moderation-friendly alternatives. Users gain transparency through content guidelines, usage logs, and controllable restrictions, helping teams meet platform policies and audience expectations without hindering creative exploration. Filters adapt per market, age rating, and genre, with trusted override options.

💾

Flexible export and integration options

Easily export in multiple formats, including transparent PNG, animated GIF, and high-resolution MP4 sequences. The tool supports project-wide color profiles, metadata, and frame rates for smooth handoff to editors and engines. Integrations with popular art suites, cloud storage, and asset managers streamline collaboration, delivery, and archiving across teams and platforms. Users can schedule exports, presets, and batch jobs for projects.

User Reviews

Amazing tool that turns rough sketches into vibrant anime art with astonishing precision and style. The interface is clean, responsive, and begging for experimentation, while the presets cover classic and modern looks without feeling rigid. I love how the generator respects line weight, color balance, and mood, producing outputs that require only minor tweaks. Performance stays fast on daily projects, and the community gallery offers fresh ideas. A reliable companion for creative workflows that value polish and imagination for everyone. - Alex D

This AI anime art generator feels like collaboration with a patient artist who never tires. It renders crisp linework and rich lighting, producing anime frames that look ready for publication. The controls are thoughtful, letting me adjust pose, expression, and atmosphere without clutter. I appreciate the safety filters that keep content friendly, and the export options fit my pipeline. It remains stable across large batches and saves me hours by automating repetitive tasks while preserving my original concept every day. - Maya S

Polished results and a feature set make this generator shine for both quick sketches and finished pieces. I enjoy the adaptive style sliders that let me steer tone toward classic shonen or soft slice-of-life palettes, all without sacrificing quality. The AI responds to input prompts with surprising nuance, translating ideas into expressive poses and dynamic compositions. Customer support is responsive, and tutorials cover workflows without overwhelming beginners. For an artist seeking consistent anime imagery, this tool is a reliable partner. - Noah K

From concept to canvas, the generator delivers crisp results with a subtle, painterly feel that suits many anime genres. The export options include layered PNGs and vector-like assets, which simplifies post-production. I value the guardrails that prevent oversaturation while keeping colors lively and balanced. The responsive preview window helps me test ideas quickly, and the batch mode handles multiple iterations without any slowdowns. Even on older hardware, the app runs smoothly, making it a practical asset for ongoing projects today. - Lena B

Impressive versatility and thoughtful defaults let me produce anime art with confidence. The AI handles facial expressions and motion blur in a way that feels natural, and the background brushes add depth without stealing focus. I can seed ideas with rough silhouettes and watch the system fill in details that stay faithful to the input. Documentation is clear, and the community tips point to practical tricks. This tool consistently sparks delight across characters, scenes, and moods while keeping production efficient. - Kai R

Working with this generator feels intuitive, and the rendered results consistently echo anime aesthetics I admire. I can fine-tune line density, color grading, and lighting direction to match a specific series vibe, then batch-export for quick reviews. The portrait outputs hold emotion without distortion, even at larger sizes, which is impressive. The credit system for selected styles is straightforward, making experimentation affordable. Overall, the experience is polished, reliable, and inspiring for creators who want vivid, expressive characters in daily work. - Mira L

This tool feels endlessly adaptable, letting me craft anime art that fits a range of projects—from posters to social visuals. I appreciate the AI's attention to pose variety, gesture, and dynamic angles, which keeps scenes lively. The color algorithms produce harmonious palettes, and the interface remembers my preferred settings across sessions. When I hit a creative block, a few prompts generate fresh direction without sacrificing quality. The export choices align with my publishing cadence, streamlining delivery to fans and collaborators. - Theo P

Impeccable rendering and thoughtful workflow integration make this anime art generator a joy to use. It handles subtle lighting, skin tones, and hair highlights with care, producing images that feel cinematic yet accessible. I value the ability to generate multiple variations in a single click, then refine the favorite option without losing momentum. The asset export preserves transparency and quality across platforms, while the mobile companion app keeps ideas ready for on-the-go sketches. A dependable tool for consistent creative output. - Jun Y

FAQ

What is the best ai anime art generator?

An ai tool described as the best ai anime art generator creates stylized images by interpreting prompts, adjusting linework, shading, and color. It helps artists and fans test concepts, aesthetics, and prototype visuals quickly without switching apps. When comparing options, focus on output quality, consistency, speed, and safety features. Look for clear licensing terms and adjustable styles. The best ai anime art generator should empower imagination while respecting originality and artist rights in every render for responsible use by creators.

How to use the best ai anime art generator effectively?

To use the best ai anime art generator effectively, start with a clear prompt that defines style, mood, and character features. Experiment with prompts, seed values, and output size to find consistent results. Iterate by adjusting linework emphasis, color balance, and background details. Save presets for recurring characters, then compare variants to pick the most expressive option. Respect licensing terms, credit artists where required, and avoid generating inappropriate content by applying built in safety controls. best ai art generator anime

What features should I look for in the best ai art generator for anime?

For many artists, selecting tools, consider the best ai art generator for anime means weighing output control, style variety, and safety. Look for adjustable brushwork, line weight, and color palettes; check for multi style presets and easy prompt editing. A helpful interface speeds up iterations, while clear licensing terms protect your work. Prefer models with stable updates and documented limits. Consider community feedback, sample galleries, and trial periods to gauge results aligning with your creative goals and expectations clearly today.

How to pick the best ai image generator for anime?

From evaluating the best ai image generator for anime, examine output consistency, ease of customization, and system safety. Look for resolution options, layer separation, and editable prompts that let you refine lines, shading, and backgrounds. Check model compatibility with your art tools and if you can export in high quality without watermark or watermarks. Read license terms and community reviews to learn about reliability and support. A solid choice balances creative control with practical workflow needs for consistent anime art.

What is the ideal role of the best ai anime character creator?

An ideal tool named the best ai anime character creator streamlines concepting, allowing designers to sketch personalities, outfits, and expressions quickly. It should offer adjustable anatomy templates, hairstyle presets, and wardrobe options while preserving unique features. Use it to generate multiple iterations, then select strong silhouettes and color schemes for development. Remember to respect copyright and model licensing, and to credit original artists when required. When used thoughtfully, this type of generator can aid storytelling and character design across genres.

What is the best waifu generator ai?

Consider the best waifu generator ai when you want stylized personalities with warm color palettes and expressive eyes. Assess reliability, safety filters, and the ability to customize hair, outfits, accessories, and pose. Look for multilingual prompts, consistent anatomy, and export options suitable for comics or animation. A strong tool balances originality with recognizable anime traits, offering prompts presets and a history log so you can reproduce favored looks. Always verify licensing terms and attribution requirements for published work in projects.

Which are the best anime style stable diffusion models?

When selecting tools, consider the best anime style stable diffusion models that balance detail with efficiency. Look for models trained on high quality anime benchmarks, plus controls for line fidelity and color grading. Favor platforms that provide parameter presets, safe prompts, and an active community sharing tips. Test several configurations on a small batch of prompts before scaling. Track results by comparing clarity, pose variety, and consistency across scenes to determine if a model fits your production pipeline in practice.

How can I legally use AI generated anime art in public projects?

Legal use of AI generated anime art depends on licenses and rights granted by the provider. Read terms about commercial use, redistribution, and attribution. Some services allow royalty free publication; others require purchase or credits. Maintain transparent provenance by saving prompts and model details for each render. If sharing publicly, respect trademarked characters and ensure you have permission for character based work. Consider watermarking or obtaining written licenses when monetizing illustrations in books, games, or streaming media to protect creators.

What are common mistakes to avoid with the best ai image generator for anime?

Avoid common mistakes with the best ai image generator for anime by starting with vague prompts and expecting precise results. Don't neglect aspect ratios, color grading, or face consistency across frames. Resist relying on a single preset; test multiple prompts and safety filters to prevent unintended content. Keep backups of successful renders and track prompts for reproducibility. Be mindful of licensing, and never claim authorship on outputs that closely imitate a living artist's unique style. Respect creators and consider originality.

Where can I find reliable sources for the best anime style stable diffusion models?

When starting a project, seek out reputable repositories or official announcements for the best anime style stable diffusion models. Check for model cards that describe training data, safety, and licensing, plus example galleries to judge quality. Compare performance on your prompts, noting speed and stability across prompts with different features. Look for community discussions, developer updates, and tangible proofs of responsible use. Remember to confirm usage rights before integrating models into apps, games, or commercial art pipelines for team projects.

Choosing the best ai anime art generator

Midjourney Midjourney delivers vivid anime-style prompts with a strong emphasis on color, composition, and dynamic lighting. Users craft text prompts to steer characters, backgrounds, and atmosphere. The platform supports image prompts and aspect ratios tailored for manga panels, action scenes, or serene portraits. It excels at bold linework, dramatic shading, and cinematic scenes. The system relies on its evolving models that respond to stylistic cues such as chibi features, expressive eyes, and stylized hair. Output tends to be highly polished, with consistent texture and depth. For creators seeking rapid iterations, Midjourney offers accessible guidance through helpful prompts and clear feedback loops.

Stable Diffusion (Anime LoRA) Stable Diffusion with anime-focused LoRA packs lets artists generate crisp character art and atmospheric scenes from simple prompts. It supports fine-grained control through seed values, prompts, and negative prompts to reduce unwanted elements. Users can swap colors, styles, and line density to fit preferences, from soft shōjo looks to sharp action anime. The model handles backgrounds with thematic texture and believable lighting, while preserving character features. Local or cloud setups accommodate privacy and speed, with compatibility for upscaling and in-painting. This option suits creators who want open-source flexibility, offline work, and adjustable style fidelity. It supports prompts and model sharing.

NightCafe Studio NightCafe Studio offers a user-friendly interface with dedicated anime style presets and adjustable controls for line weight, color, and mood. It combines artistic filters with AI image generation, allowing prompts to steer character appearance and scene setting. The platform supports upscaling, variant generation, and batch creation, making it easy to iterate on ideas. Artists can add references, experiment with lighting, and refine hair, eyes, and outfits for consistent character identity. Output tends to be crisp with clean shading and dynamic contrast. NightCafe is suited for hobbyists and professionals seeking reliable, accessible anime visuals from prompts across projects and genres today.

Artbreeder Artbreeder centers on collaborative image genetics, letting users blend multiple anime-like bases to craft characters and scenes. Sliders control features such as eye size, face shape, hair style, color palette, and background texture, enabling gradual refinement without starting from scratch. The system excels at producing expressive faces and harmonious color harmony across layers. It supports cross-generation between portraits and environments, aiding character consistency and world-building. Artbreeder values shared creativity, with communities sharing variations for inspiration. For artists who prefer hands-on, visual tuning, it offers direct manipulation and rapid exploration of styles and moods. Results adapt smoothly to different storytelling tones.

Waifu Labs Waifu Labs specializes in single-character generation, delivering polished anime figures with expressive features and distinctive outfits. The interface guides users through straightforward prompts to set pose, hair, eye style, and color palette, producing high-quality output in a few iterations. The system emphasizes personality through facial expressions and subtle shading, creating engaging character sheets. It supports export in common formats and options for simple background options. Although focused on individual characters, results can be integrated into scenes via other tools. This solution suits hobbyists seeking clean, ready-to-use anime portraits quickly. It offers consistent results suitable for comics, avatars, or games projects.

Wombo Dream Wombo Dream provides rapid, colorful anime-inspired images with minimal prompts and a simple prompt-to-image flow. It shines in producing bold color palettes, energetic poses, and stylized hair details that fit anime aesthetics. The platform supports upscale options and style filters to adjust line density and shading. Users can iterate by re-trying prompts until the look aligns with their vision, and can export finished artwork in common resolutions for sharing or posting. Wombo Dream is ideal for quick concept art, social media visuals, or introductory experimentation with AI-assisted character art. Artists appreciate fast feedback, flexible styles, and broad device compatibility today.

Generator	Best use case	Anime-specific features	Output options	Accessibility & platform
Midjourney	Rapid concept art and cinematic anime scenes through prompts.	Bold line density, dramatic lighting, dynamic framing.	High-res images, consistent textures, versatile aspect ratios.	Cross-platform web access with ongoing model updates.
Stable Diffusion (Anime LoRA)	Fully customizable, offline-ready anime artwork with LoRA control.	LoRA-driven styles, precise prompts, negative prompts to reduce noise.	Local rendering, high-resolution upscaling, in-painting.	Open-source, local or cloud deployment; broad community.
NightCafe Studio	Beginner-friendly anime visuals from presets and prompts.	Dedicated anime style presets, color and line control.	Upscaling, variants, batch generation.	Web-based with credit-based system; social sharing.
Artbreeder	Character-focused art with iterative blending for identity.	Face sliders, eye/hair controls, style blending between portraits.	Portraits and environments across layers.	Collaborative community, browser-based.
Waifu Labs	Polished single-character portraits quickly.	Expressive faces, outfits, pose and color prompts.	Export ready formats; backgrounds optional.	Web service with straightforward prompts; mobile friendly.
Wombo Dream	Fast concept art for social media and quick ideas.	Bold colors, stylized hair, energetic poses.	Upscale options; various style filters; multiple resolutions.	Mobile and web; instant results.

Best Ai Anime Art Generator