Dave appears to be a kind of antisocial jerk, showing no guilts for committing murders, even appears to consider his crimes as casual events with a total cynicism. However, he does have regrets for murders. He has no regard for boundaries, at all, and will openly sneak into Jack’s house in the middle of the night. Dave has a fascination with calling Jack ‘old sport’, or ‘sportsy’, and will almost never actually call Jack by his name.