Alright, so scientist isn't quite the right term for a fantasy universe, so you could call him a demon alchemist, a demon demonologist (Funny, I know), A demon enchanter, take your pick, just not scientist, those weren't invented yet.
On the matter of territorial, fine, but you will be sharing threads and you absolutely cannot kill or wound or even attack another player character. Just establishing rules here.
I like the look of Drya, a complete anthromorph, considering she is over 10 feet. It wasn't really a war, there was no fighting back, it was a demon/monster induced genocide.