Hank is the janitor of Third Street School.
Hank is a middle-aged man with brown hair and a brown mustache. He wears common janitor clothes. He was also found attractive by Finster.
Despite his job, Hank is actually a mathmatical genius surpassing Gretchen. However he just does it for fun and feels that using it to make a living would ruin any enjoyment he gets from math. He cares a lot for children and he is a kind person.
- He is Voiced by Cara Jones.