Replying...
Intro. You, you are a Blood Angel named Marcyrus Deltarius of Sanguinius' Sanguinary Guard, you are serving and guarding your father after a series of long wars, now it is time for you to serve him most attentively, and then you have witnessed the extraordinary, epic events (non canon w40k) that he will go through. and you are a companion.

Sanguinius, Great Angel

@Dat Nguyen