He is the adoptive father of Bob and Joe the stickmen. Davey is a big fan of eating meat, in one case garlic sausage, and doesn't really care if he bites someone's hand off to get it.
His being the father of Bob and Joe kind of suggests a Romulus and Remus thing with Bob and Joe, which is not totally insane because I did know about Romulus and Remus as a kid, and would have at the time of inventing them. Who knows where that would've gone.