He’s not the character we know, or what he should be. Hell, the push of Abaddon in general, who has undergone enormous ‘character development’ long before he’s supposed to in the Black Legion books. Sanguinius naming Abaddon the greatest warrior of the Legiones Astartes. Dorn fighting Fulgrim is great, but it feels off. “Thinking on it more, there’s a lot of things that don’t seem to make a lot of sense. The theory starts out by going over some of the major inconsistencies we’ve seen in both the Horus Heresy Books and in particular the Siege of Terra books, and how some events don’t line up to what we “knew” happened. SPOILERS FROM SIEGE OF TERRA NOVELS AND VARIOUS HORUS HERESY BOOKS The Inconsistencies This theory comes from the folks over at Reddit and was originally posted by Legio Tempestus, let’s take a look at what they’ve got to say. Today we are going to talk about one of the crazier theories out there about some inconsistencies. Any inconsistency, perceived or otherwise, often leads to some kind of theory to explain it. Writers, after all, are only human (currently at least, if any non-humans writers read this in the distant future I apologize). In any telling this large, and with so many people involved, it is almost certain that there will be some errors or inconsistencies. The Horus Heresy is the most important event in the 40K story and is being told over dozens of novels, short stories, and audio dramas by a host of authors.

The Horus Heresy is a major part of 40K lore, but what if the one we’ve been reading about, isn’t actually the Heresy we know?

Horus heresy timeline