is there a story behind Xavier's scar? (he was always one of my favourite minor characters, and this has bugged me so much! I was going to wait to ask you in person, but I thought I'd better make sure there is a reason behind it first!)

Shaving accident.

Okay, maybe not really, but close :) The scar looks badass. The reason for it? Less badass. A lot less.

Of course, if you asked Xavier, he’d tell you a terrific war story, probably how he fended off a pack of hell beasts single-handedly. Given that he can teleport, though? Let’s just say if an actual pack of hell beasts appeared, he’d zap himself out of there and let everyone else get torn apart. But I’ll leave him to his badass fantasies. For now.