Serpent

Cul Borson, the Serpent, is the Asgardian God of Fear and secret brother of Odin who was imprisoned long ago. Freed in the Fear Itself event, he reclaims his ancient power by spreading terror across Earth, challenging even the might of Thor and the Avengers.

Bursting onto the scene in 2011's Fear Itself #1 — the Marvel event series crafted by Matt Fraction and Stuart Immonen — Serpent is a Modern Age villain whose very debut carried the weight of a universe-shaking story. Sharing pages with heavy-hitters like Odin, Cul Borson, Carol Danvers, and Spider-Woman speaks to the scale of the threat this character represents, anchored across Fear Itself and The Mighty Thor. Though their catalog footprint is compact, every appearance carries that key-issue energy that makes collectors take notice.