'''Gerius the Unbowed''' is a [[Venerable Dreadnought]] of the [[Ultramarines]], who took part in his [[Chapter]]'s invasion of the [[Daemon World]] [[Phyr]]. There, deep within a labyrinth of the world, he crushed the head of the [[Daemon Prince]] [[Dar’gule‎Dar’gule]], the ruler of Phyr; sending him back to the [[Warp]].{{Fn|1}}

*{{Endn|1}}: [[Dataslate: Space Marines Strike Force Ultra]], pgs. 4-54–5