“What's this crap?”
—Gym Teacher, Dexter Dodgeball
The Gym Teacher was Huber Elementary's substitute P.E. Coach. His only appearance was in "Dexter Dodgeball" where he was responsible for setting off the plot and beginning Dexter's troubles.
- In the credits, he is simply referred to as "Coach".
- Not counting Dee Dee, he can be considered Dexter's first human antagonist along with the Dodgeball Bullies