Alien X is the only original alien from Alien Force not to be voiced by Dee Bradley Baker.When someone asked what gender Alien X was, Dwayne said 'Male and female'.Alien X cannot be destroyed if the personalities agree he can't.He is the first and only alien to have the word alien in his name, the second used to be Incursion Alien until his name was changed to Bullfrag.He is Ben's first powerful alien, while Atomix is his second powerful alien.So Long, and Thanks for All the Smoothies: Used to recreate the Universe with sucess.The Ultimate Enemy: Part 2: Seen only in a flashback.The Forge of Creation: Used to try and find the Forge of Creation and stop Aggreggor.X=Ben+2: Used to stop a flood and stuck for the whole episode.On another note, despite his omnipotence, he is vulnerable to having his powers absorbed, as Ben and Azmuth respectively have implied that Darkstar and Osmosians can steal his omnipotent cosmic abilities and powers for themselves. In Ben 10,000 Returns, the said weakness was referenced by Professor Paradox, where he revealed that there is an alternate timeline where Albedo of that universe transformed into Alien X and was stuck in the form for nearly a year. This reveals to be a major weakness, as the personalities initially weren't even interested in dealing with present affairs and wanted to finish some past ones that weren't possible to deal with without Ben (with a comical scene where Bellicus reopens a discussion on whether or not to save the dinosaurs from extinction). In order for Alien X to perform any action, including but not limited to, simple movement and transforming back into Ben, at least two of the three personalities (Serena, Bellicus or Ben) must agree to do so. These powers are so strong that his mere thoughts can become real and he can create an entirely new or cloned universe from scratch. Omnipotence: He is able to warp space, time, and reality to any level he wishes thus making him truely invincible. He is more muscular and his horns are smaller. He retains his original appearance, but his chin is now bigger like Diamondhead.On his head are 3 horns like Ultimate Way Big. He has tiny white star-like spots all over his body. He is all black excluding his hands, which are white. He is a humanoid alien that has white hands.He wears the Omnitrix/Ultimatrix symbol on his chest.

List of ben 10 episode