Three years ago, director Dan Trachtenberg brought the "Predator" franchise roaring back with "Prey." Sure, it was just another movie about aliens hunting humans for sport, but "Prey" wisely set the action in an earlier era: hundreds of years ago,

"Predator: Killer of Killers," on Hulu Friday, expands the franchise with animated episodes set in historical periods as Predators battle Viking, samurai and World War II warriors.