If you're looking for a site with character creation guides and other resources geared for anime fans, Yodayo is a great option. The AI-powered creative platform offers a range of tools for generating anime-inspired content. That includes a Character Creation Guide and an Image Generation Guide to help you generate anime characters and images that look good. The site also has a chat interface called Tavern where you can chat with featured characters, and a subscription plan to generate and spend YoBeans.
Another option is Anime Art Studio, a free web-based service that offers access to more than 100 stable diffusion anime models. You can use the site to generate a broad range of anime images, voices, videos and animations without having to sign up or pay. It's got tools for generating prompts, upsizing images, generating voices, and turning text into videos or animations, so it's a good all-purpose tool for any anime creation need.
If you want something more interactive, you might like Charstar, a virtual character platform that lets you create, find and chat with a variety of characters, each with its own personality and backstory. The site is geared for role-playing and personal interactions with the AI-powered characters, and offers a lot of depth and variety through its simple interface and new AI technology.