Except for the undead. So, I suggest fixing it.Actually, there is one hybrid. Not quite an NCF creature, Durman made it for one map, I used it instead of a yeti. Demon + undead. The demon aspect is just for show; in reality, it's a hybrid only in description, it already has immunity to fire waves. Perhaps we could teach it to open gates as well, although it's very strong, but there should be at least one amulet that's a top-tier item for someone, right?
But it also needs gating
There are NCF creatures of the same name, level 6, much weaker, approximately equal to a hellspawn. They definitely need gating.