In September 2012, Barnabas came across Kit Herondale and Julian Blackthorn in the LA Shadow Market. He introduced himself and asked after Malcolm Fade, though he knew what had happened to him and used this knowledge to condemn the Shadowhunters. Barnabas then told them to leave, despite Kit's protests, and impressed upon Kit that he was also no longer welcome as he was a Shadowhunter now.
Barnabas later traveled to the London Shadow Market after being told by the landlord Hypatia Vex that Kit was there pretending to be on business from him. He brought a pack of werewolves with him and set them upon Kit and the Blackthorn twins, resulting in Kit throwing a knife at his shoulder.
Magnus Bane arrived as the Shadowhunters were about to be killed and stopped the battle. Barnabas was outraged at his intervention and insulted him for his affiliation with Shadowhunters, especially the Lightwoods. However, Barnabas was afraid of Magnus telling the Clave what he'd done and called his pack off before disappearing.
Personality and traits
Barnabas is a cynical, businesslike person. He distrusts Shadowhunters and disdains any Downworlders who affiliate with them, including those who offer their services to them in exchange for a fee.
Barnabas is described as a short man with a neatly clipped dark hair and beard. He has yellow, reptilian eyes—yellow with slit-pupils—and skin that is a mesh of overlapping whitish scales that is cold to the touch.
- Lord of Shadows (first appearance)