• HappinessInSlavery: Until Kitty's gang came along, he was sealed inside Gladstone's body, permanently unable to return to the other side where spirits come from. It did not help his state of mind.
• ItsAllAboutMe: He views other people entirely in terms of how useful (or not) they are to him.
• NietzscheWannabe: Devon believes that everyone in Deepgate is waiting to die and therefore, undeserving of life. The bad thing is that he's not wrong; Deepgate's entire culture is based around waiting to die.
• PerpetualFrowner: To Edgar Linton.
• SealedEvilInACan: He's sealed inside a clay idol. Interestingly, it's implied that if another clay idol is made and enchanted in the right way he can turn even that idol into his body.
• SheCleansUpNicely: Beka is quite shocked at Clary's appearance whenever she's dressed as a citywoman and not a Dog.
• SorcerousOverlord: He's being manipulated from the start by the Crippled God, who is messing with his emotions.
• TheMedic: He's a doctor.
• VillainousBreakdown: In the film he actually seems to be mute.
• WorkingClassHero: As a steelworker, construction worker, and union activist during the interwar period.