Question: I need a solution to create custom AI characters from scratch, do you know of any?

If you want to build your own custom AI characters from the ground up, Kamoto.AI is a great choice. It lets you create, train and sell your own AI personalities for things like games, education and medicine. The service lets you train your own models and license celebrities and other influencers, so it's good for people who want to build their own AI doppelgangers.

Another good option is Inworld Arcade, which offers a rich world where you can chat with AIs by voice or text. It's got a variety of characters, including celebrities and interactive games. Programmers can also create their own AI characters with the Character Engine, so it's a good option for interactive storytelling and socializing.

Tiny is also worth a look. The service lets you build and chat with your own custom AIs that reflect your personality or company brand. You can build your own AIs, chat with others' creations and use the service to boost your online presence with AI-powered tools for managing messages and steering conversations.

Last, WNR.AI is good for creativity and flexibility. You can build conversational AIs with their own personalities and appearance, add images, and train them with user feedback. The service has a library of community-created templates, and you can sell your own AIs, too, so it's good for content creation and engaging interactions.