If you're not checking out the companion site to HBO's Watchmen, you're missing out on a ton of fun fill-in-the-blanks to go along with Damon Lindelof's trippy superhero drama. The info on the Peteypedia—named after Anti-Vigilante Task Force agent Dale Petey, who made his debut in episode 3 played by Dustin Ingram—isn't essential to watching the show, but it does color some of the bigger questions with intriguing evidence. Like, for instance, why exactly Angela Abar (Regina King) discovered a KKK hood in the closet of her friend and …