Jack Harris is Duncan's father.
He is a tall, beefy man with red-brown hair, a soul patch, a stubble and a small moustache, he has burly, hairy arms and wears a red flannel shirt with a gray shirt underneath.
Jack is somewhat emotionally disturbed. He's interested in Hard Rock music and has a particular insecurity around his attempts to seem 'cool'. Though stated very briefly in "Red Head Redemption," Jack's previous military service plays heavily into his character.