hello, about your question, you can just add a new degree of evolution that turns a pokemon into a beastman (sorry for the grammar, I wrote through a translator)
I like how he will be evil. Please make him create his own organisation better than team rocket or make him the son of Giovanni so he can inherit team rocket. The Mc should defo have Mewto as his right hand makn Pokemon
(sorry for the grammar use the translator) ok the harem is better to be more about Pokémon it is logical that they accept him more than a human woman and I keep insisting that he is rich and a psychic prodigy
