Denny

"'YOU'RE NOT MY FUCKING MOTHER!'" Denny is an orphaned college age adult who Johnny takes under his wing, paying for his apartment and tuition. Denny displays some attributes of autism and is typically heavily reliant on others.

In "The Room"
Johnny saves Denny from Chris-R, a thug who attacked Denny for his drug money. Johnny scolds Denny for being so irresponsible and getting involved for drugs at his age. Johnny frequently offers Denny a way out of difficult situations, whether or not Denny deserves or has earned it.

Denny has an infatuation with Lisa and confesses this to Johnny on the roof. He also has a love interest named Elizabeth ("Someday I wanna marry her. And I wanna have kids with her."), who Johnny suggests he pursue instead.