Knutson is a Marine freshly out of bootcamp. He is always together with his friend and fellow marine Zelinski.
The pair appears on Phil's route to mock and just generally antagonize him.
It's heavily implied that Knutson is a closeted, self-hating gay man as he taunts Phil with "I bet you'd like to have sex with me" scenarios that get a little too detailed. He also claims to have a test that can tell if someone is gay.
Knutson has a tall and muscular physique with platinum blonde hair. He wears a purple floral shirt.