Brega Ironfist
Brega Ironfist was the first member of the Space Wolves Chapter to successfully undergo the Rubicon Primaris to become a Primaris Space Marine. However, it was not until the popular Wolf Lord Ragnar Blackmane crossed the Rubicon that some of the Chapter's suspicion around the transformation began to lessen.[1]
Sources
- 1: Codex: Space Wolves (9th Edition), pg. 23 — The Blackmanes