Daemonomicon: Path of the Hellion (Patreon)

Barbarians that walk the Path of the Hellion are mortal that signed an infernal contract or were tricked into fighting in the front lines of the Blood War. The Blood War is an endless war fought between the evil forces of order and chaos. Unless devils fighting to establish their tyranny through the multiverse fight against the endless hordes of chaotic abyss spawned demons, and if any side were to win the multiverse would end as it is known. A barbarian of this path would have perished long ago if it wasn’t for the hellfire engine that has replaced their heart. These hardened warriors have witnessed the true horrors that are the lower planes and have lived to tell the tale

Art by Andrew Kuzinskiy on Artstation