Today I am going to talk about Mephiston and his extremely odd background. Although his rules are quite amazing and his stats extremely strange for an infantry Space Marine, even a character, his background explains it all even if it is weird too.
The basics of it for those who don't is that Mephiston was once a Librarian until he was overtaken by the Black Rage and put amongst the Death Company for his glorious death in madness like all those before him. However when at the front of an assault in an Imperial city he was buried underneath a collapsed building and stuck fast. Even in his rage he was unable to move and had to endure a week of insanity before he overcame the Black Rage. He burst from the rubble as Mephiston, transformed into a monster of incredible strength, psychic ability and toughness. Typical of a Space Marine he then butchered a couple hundred Orks and now appears where he is needed most.
That would be scary.