Allow creating 'characters', like Persona but for NSFW purposes. Define a character by face portraits from different angles and body photos from different angles. Allow to reference characters for image/video generation.

Example: I created an image with a nude girl. I want to make a series of photos with the same girl. I press variations, get 10 results, pick one where she is to see only from the side. I use that again for variations, and the new results show her now with a different face, different breast size, etc. Use of characters would avoid that.