Okay, first off, I'm a newbie to the Warhammer universe as a whole. I started reading HH novels (cause I wanted to understand the foundation of this incredible storyline from its beginning) a few days ago and currently, I am finished with 'Fulgrim'. But after all the backstory and wars, here's my question:
Who was the first being to get corrupted AND spread the taint to the rest of the Legions and Primarchs?
I've narrowed it down to either Erebus, First Chaplain of the Word Bearers legion, and Kor Phaerun, 2nd in command to the Primarch, Logar, both of the Word Bearers.
But that's just it; was it Erebus or Kor Phaerun? And just which Daemon God made them convert to Chaos?