Nega Alien X is the Omnitrix's DNA sample of a Celestialsapien from the Forge of Creation.
Nega Alien X has three personalities: Serena, the 'voice of love and compassion', Bellicus, the 'voice of rage and aggression', and Ben, the 'voice of agreement'.
Nega Alien X is a humanoid alien whose entire body is solid black, excluding his hands, which are light purple. He has tiny purple star-like spots all over his body, giving him the appearance of a starry night sky. His eyes are purple and lack pupils, and his forehead bears three horn-like protrusions. He also has "hair" blocking his right eye.
He wears a blueish-silver gladiator armor, with Bellicus and Serena masks on his shoulders. The Omnitrix symbol is located on his chest.
Powers and Abilities
Nega Alien X is omnipotent, being able to warp reality, time, and space with ease and at any level he wishes. Even his thoughts can become real. In short, Nega Alien X can do anything.
Nega Alien X can create time waves to reverse events.
Nega Alien X can create and recreate an entire universe at will.
Nega Alien X is nearly invulnerable, as Alien X was completely unharmed when the Anihilaarg destroyed the universe around him.
Nega Alien X can self-duplicate, create galaxies to suck in other beings, and travel at high speeds. He also possesses superhuman strength and the ability to grow to a gigantic size. He is skilled at hand-to-hand combat.
Nega Alien X possesses telekinesis and is capable of deflecting energy attacks.
Nega Alien X can bond his power with other Celestialsapiens if they agreed.
Nega Alien X is vulnerable to having his powers absorbed, as Ben and Azmuth have implied that Darkstar and Osmosians can absorb his omnipotent powers.
Other Celestialsapiens, like the Galactic Gladiator, can harm Nega Alien X.
Nega Alien X cannot survive on Anur Vladias.
Nega Alien X's actions onto reality can be neutralized and reversed by the intervention of other Celestialsapiens.
Nega Alien X would not survive omniversal or timeline destruction unless he combined his powers with a group of Celestialsapiens in advance.