>>53900837Lillie is canonically around 11, so she can't be added.
Serena has no canon age in the games, but she's 10 in the anime and 12 in the manga. Average it out to 11, and she can't be added.
Marnie doesn't pass the 1A snuff test (like Gloria), so she would need to be aged up.
Bea has no canon age, and would probably need to be aged up to pass the snuff test.
Hilda is canonically 14 in BW1, so she would need to be aged up a few years.
Hex Maniac has no canon age, but one can reasonably assume she's an adult as long as you give her enormous tits.
Nessa has no canon age, but one can reasonably assume she's an adult because she's a model.
Sonia has no canon age, but one can reasonably assume she's an adult because she's a professor.
Skyla has no canon age, but one can reasonably assume she's an adult because she's a commercial pilot (minimum age to have a private pilot's license in New York is 17).
Jessie is canonically an adult (25+).
Lusamine is canonically an adult (40+).
If you go by FurAffinity rules, then you can't add Pikachu, Eevee, Vulpix, or Braixen. All of the other Pokémon I listed should be fine as long as you adhere to the "Characters Must Have Human Anatomy" rule:
>Characters must possess humanoid sexual organs, and have basic human anatomy.>"Monstergirls" and similar sorts of characters are allowed, but they should still look recognizably humanoid. For instance, a lamia character who limits most of her snake attributes to below the crotch would be accepted.>Note that a character's anatomy should match the character's sex and gender. This is partially a game code limitation.So they would have to be gjinkas or monstergirls/boys. No anthros, no feral.
The real people/non-con/no OC rules don't apply.