Attea

Attea is the daughter of the Incursion Emperor Milleous.

Alien Force
Attea was kidnapped by Sevenseven for ransom money, but she offered him twice the money to him to help her dethrone her father in which, she did but it was short lived as Swampfire defeated the Incursions and her father escaped from the dungeon. She was sent to the dungeon with her mother.

Omniverse
To be added

Ben 10: Alien Force

 * X = Ben + 2 (first appearance)

Ben 10: Omniverse

 * Tummy Trouble (first re-appearence)
 * Vilgax Must Croak