I haven't played him
at all much yet, but I have a basic idea of his personality and backstory.
Ludo is sort of a jerk, to put it bluntly. He's seen humanity at its absolute worst, and it's turned him into something of a recluse -- he has one or two close friends, but they're supernaturals, like himself. He only interacts with humans when he has to, usually in the course of performing whatever job he's currently taken to support himself. Despite being so apathetic, he generally doesn't like it when other supernaturals start preying on humans that can't fight back, if for no other reason than it might get humanity in general pissed at ALL vampires. He's an ex-soldier, so some of that thinking and training still carries over into his undead life, but it's been waning over the decades.