User blog comment:Dawn14/What is Dez's Last Name/@comment-65090-20140117041421

It's just one of those things you're not meant to know. Like what state Springfield is in on The Simpsons, the Krabby Patty secret ingredient on SpongeBob, or what country Fez from That '70s Show is from. That said, I'm going with Hatfield now, for the same reason. This is an obvious reference to the Hatfields and McCoys.