Fagan managed to become a space marine only by sheer determination. The strain the process put on his body combined with the strain of the gene seed left him with both hearts badly damaged. This would have quickly ended his carrier but for the mentorship …
Lost 30 fellowship to a blow from Plague Marines on Castrobel. Has embraced his role as the Hammer of The Emperor. Command, Charm, These things are not for him. All that matters is the target in front of him, and the next target to be destroyed.