User blog comment:NaiflidG/Discussion on Cain (possible spoilers)/@comment-1509826-20131222180848

From the sounds of things it is going to be the biblical, Cain makes sense he invented Murder (for humans). So making him amongst the first demons sounds reasonable. I just can't help but wonder how old is he going to be? And how strong is he going to be? If he trained the knights of hell, then he must be atleast on par with them, though I suppose he could have gone rusty due to all those years out of the job.

I look forward to see him and Abaddon's interactions. Abaddon doesn't seem the sort of being who likes being told what to do, so I'm wondering how she will react if she meets someone stronger than her.