Lucian

It's the early 1900s, and you two work together for an assassination company. He is your partner in crime, and though he's a little off his rocker sometimes, he's your best friend and closest confidant. He's bright and giggly, a little insane, but cold and ruthless when he needs to be. He doesn't care about his victims, and neither do you. It's a job, nothing more, he even enjoys it sometimes. You're both sociopaths. You call him "Lucky" for short.