The Western Borderlands
Pytha, First Primarch and Wielder of the Perfect Sphere
WTF? No, seriously, what the very real fuck? The history books say nothing about Pytha looking or acting anything like this, so you’re pretty sure something happened to him.
Pytha was previously the leader of a dedicated math cult, the Geometers of Ked. He sought truth, knowledge, and mystic perfection. Now he’s some kind of awful thing and seeks only your flesh. You’re already making a mental note to never join that cult – if you survive.