Celestialsapien

Celestialsapien(A play on "celestial," meaning from the stars, and "sapien," a term for intelligent humanoids) is the species of Alien X from the formless planet of Zvezda.

Appearance
Celestialsapiens are fairly simple in physical design. They are silhouette-like humanoids about the size of a human adult male. They have white star-like dots scattered inside their transecent body, and 3, trident-like horns on their forehead. Their face only consists of pupil-less eyes. They have white shadows.

Personality
It is said that they became one with the stars, no doubt through their powers, to survive on their world. They prefer their shrouded existence in Zvezda, as opposed to being involved with the "petty going-ons" of the rest of the universe. Celestialsapiens have three personalities: the voice of rage and aggression, the voice of love and compassion, and a voice of reason. Two out of three must agree on something in order for the Celestialsapien to perform any sort of action. All three voices speak in unison when the Celestialsapien speaks, and depending on what the voices agree on, they shout either "Seconded! Motion carried!" if they agree.

Powers and Abilities
Celestialsapiens have a strong ability to warp reality, meaning their thoughts can come to life. They apparently are able to alter time and fly. Their reality warping is so powerful, that the personalities can even prevent the Celestialsapien from being destroyed just by agreeing that it won't ("Motion denied! We will not be destroyed").

Alien X
The Omnitrix's DNA sample of Celestialsapien is Alien X. A theory is when Azmuth took the Celestialsapien's DNA, he used his advanced technology to remove the voice of reason, so that it could be replaced by the wearer of the Omnitrix when they transform into Alien X. Another theory is that normal Celestialsapiens don't really have a voice of reason, Alien X has one due to Ben and the Omnitrix. It is also possible that Alien X was unique in the fact that they did not have a voice of reason, which is why they allowed Azmuth to take a sample of their DNA so that whoever used it would become their voice of reason. Confirmed by Dwayne Mcduffie we will later see more celestialsapiens aside from Alien X.

Trivia

 * The X on its name might be a reference to the roman number of 10.