|First Appearance||And Then There Were 10|
The Omnitrix was created by Azmuth as a tool of peace in an act of repentance following the destruction caused by his previous creation, Ascalon a weapon of terrible power. The device had a twofold purpose: it would promote inter-species understanding by allowing other beings to experience different ways of life, and it would also serve as a repository for the DNA of millions of species, preserving them in the event that any of them should ever become extinct. Secretly, Azmuth also had a another reason for creating the device: he hoped his estranged lover Xennith, who had left him after he created Ascalon, would learn of his newfound altruism.
at the end of ultimate alien azmuth tells the omnitrix and the ultimatrix where a prototype and ben gets the complete one