Seriously, no one gives a fuck where they are from and where mod devs would be from either.
Just look around - there's Akabur's Princess Trainer and his other games. It's like almost two decades old, and yet he still get money for it and Disney (yeah, that Disney that owns half of modern cinema) can do shit about it. He made witch trainer, and only thing WB made him do - change it's name from Hermione Trainer. Yet the girl in the game is still called Hermione and she goes to Hogwarts. There's Slutcraft that uses characters, lore, world and names from Blizzard and they did nothing.
If it's not Nintendo - you can do anything to the characters if you call it "porn parody".
And if all these giants did nothing to those indie devs, what team forever can do to you? Especially, if you don't use their assets and draw your own graphics.