If g is the doctor, then i think he's actually trying to make those animal/humans transform solely into humans? And his first experiment was a drug which helps to prevent laying eggs, but it went wrong?
I think the main issue is they don’t know when to treat them, like little A doesn’t treat them different from humans and he knows how to help their animal issue
Yeah the way he expresses himself instead of just coming off as cold is what separates him from looking evil. IMO.
I still think G is the devil BUT I think he isn't pure evil maybe he thinks he's doing the correct thing but his methods are not the best.