Board Thread:Questions and Answers/@comment-67.142.173.20-20130504204048/@comment-11764949-20131109211948

In the episode where Ben recreated the universe, Rook mentioned a pandemesional race. Since Alien X seems only to be multi-demensional I would say he can be killed by stronger beings. Now, I could be wrong as it takes more power to create a universe than destroy it and that is what Alien X did in responce to the pandimensional race's weapon. And since technology is (typically) more powerful than the alien itself, Alien X would be immortal in all practical aspects.