They mostly come at night. Mostly. They also sometimes come when the realms align for mystical martial arts tournaments.Continuing their romp across every fictional universe, those face-hugging, chest-bursting Aliens are joining the Mortal Kombat X [official site] melee in DLC. Given that Predator is already in MKX as DLC, you'll be able to relive teenage arguments. And pit them against Leatherface. Or Jason Vorhees. I'm…