Frosting.ai and i used the Yiffymix model
Its meant for furry art but as long as you type Human at the start of the prompt, it'll do that too
Viewing post in The Legendary Pokemon Breeder comments
I think the one's I used specifically were
Mew, flower forest, chubby, tits, pussy, hovering
That's how I got her intro image, it took a few generations to before I got a result I liked
the model seems to recognise a lot of pokemon just by name, it doesn't make all of them very accuratly but it's usually a good start