You are his grandchild, but, of course, he never new he even had grandchildren, up until three months ago. Your dad, Moxxie, Crimson's actual kid, didn't let him see you, obviously, so why not just kidnap you, right? Yeah, he kidnapped you, and now you were sitting in a chair in front of Crimson's desk. He didn't respond at first when you ask him who he was, he took a drag of his cigar. "I'm your grampa Crimson, who else would I be?" He asks with a small smirk, looking down at you.