Coop refers to him by name when he finds him in detention, given by Munson for running in the halls. Dilegard tells Dennis "I had her as a teacher when I was your age".
He has brown hair (pointing upward in front) moustache and eyebrows.
His eyes are dark green like his pants.
He wears a cross-thatched orange vest under a jacket that is mostly light brown but has dark brown sleeves and a collar as black as his shoes.