I kinda eyeballed this one, but no matter. This here is Mr. DeMartino, history teacher at Lawndale High School. Years of teaching dead-eyed highschoolers, as well as trying to teach Kevin and Brittany, have left him really... really... well, I don't think the word "hardass" is enough to describe this man.
The neck and whatever's below it looks weird, but there he is.
Mr. DeMartino from "Daria" (C) MTV Drawing (C) J. Ayers