There are all sorts of demons. The Four Great Powers are Khorne (war and bloodlust and murder), Slaanesh (lust and debauchery and sensation), Nurgle (death and disease and despair), and Tzeentch (secrets and magic and change), and their personal demonic servants embody and follow those portfolios. But there are also an infinite number of weaker, unaligned demons - Furies, Spawn, and all sorts of unnamed types - who just like to prey on mortals and mortal souls without being shackled to a Chaos God and their particular flavor of nastiness. I was picturing his ship having been attacked by a swarm of the lesser demons, who possessed crew members (since they need flesh to exist in the real world and can't make their own) and went on a rampage.<br/><br/>The Call To War could have catalyzed at that moment, in fact - his sister butchered, his ship being overrun by drooling demon monsters, that's when he discovers that killing things is REALLY FUN, way more fun than ordinary debauchery. Maybe one of his partners was possessed mid-coitus? That would definitely warrant some Insanity points to see your lover mutate into a hideous demonic spawn.<br/><br/>