Jonas Harrow

A disgraced surgeon stripped of his medical license, Jonas Harrow turned his skills toward criminal science, performing dangerous cybernetic enhancements on supervillains. He is best known for augmenting the mobster Hammerhead, establishing himself as a behind-the-scenes figure in Marvel's underworld.

Jonas Harrow is a Modern Age Marvel villain who made his catalog debut in the All-New Official Handbook of the Marvel Universe A to Z in 2006 — a fitting introduction for a character whose place in the Marvel Universe is defined by the dangerous company he keeps. His ten tracked appearances span titles like New Avengers and House of M: Avengers, putting him in the orbit of heavy-hitters like Spider-Man, Captain America, Luke Cage, and Ms. Marvel. He may not boast a sprawling run, but when Jonas Harrow shows up, the stakes are invariably high — a compact, menacing presence in the corners of Marvel's street-level and superhero landscape worth seeking out for the dedicated completist.