BUNE

silly little zombie demon professor with the misfortune of working at R.A.D. Sure, its kind of cool, except his students make him want to drop dead (no pun intended) 

Bune is a less-powerful demon, however he's still very skilled at the type of magic he works with (ie. resurrection, undead stuff. ya get the gist). Bune teaches science-magic related courses and very much has a "Mr. Aizawa" feel to him, (if you've ever seen MHA)