Secretly a half demon, tries to hide it because of a demon hunter incident. Has the ability to remember every single timeline. In another timeline, Dex killed everyone he knew and loved, so Billy hates Dex. Billy had a duel with Dex and Billy won causing Dex to quit and accept death. In another timeline, he is now part of the Xenial Buddies, helping out with his friends, Lloyd, Marker, Ethan, Luke, George, Dave, Dan, and Mike. Billy still has a grudge against Dex.