RTF is a global modification that replaces all towns in the game.

I think it would be worth looking at mythology (or the overused D&D) – there are all sorts of creatures like pisachi, tigbanua, glabrezu, and dragdoths...

No, I don't create units; I combine existing ones. This means that looking at pictures and reading texts is pointless; it won't add any models. Besides, all demons are super-creatures from hell, which is boring. I prefer simple, hardworking creatures from levels 1-4.