Eunice

Eunice, otherwise known as the Unimatrix, is a living prototype Omnitrix created by Azmuth. She can absorb and contain DNA of various different species and use their abilities. She is a close ally of Ben's team and currently works as Azmuth's assistant..

History and origin
While still in her Unitrix form, her pod crashed into Earth and was discovered by Ben, Gwen and Kevin. When Gwen touched the pod, it cut her hand and sampled her DNA, randomized and created Eunice. This made her somewhat a genetic copy/clone of Gwen only that her hair was blonde, explaining why she has blonde hair instead of red/orange. Eunice, however retained the green eyes. The pod then opened to show a beautiful, and completely naked blonde girl, that of which became Eunice.

Eunice later gained consciousness, and Ben gave her his jacket to cover herself so she wouldn't be seen naked. They went to the forest and asked her who she was, but she couldn't remember anything only that her name is Eunice (it's actually Unitrix, but she can't remember it right). She and Ben started to bond very quick and started liking each other (remember, Ben recently broke up with Julie until later on in Season 2). She went back to the car with Gwen to give her some proper clothes (a simple pink tank top, white pants and sandals). It was shown that alot of animals were literally attracted to her. Even ones that were normally shy around humans. When they go fishing, Ben and Eunice started to get along very well, and their crushes on each other grew. One night, Ben and Eunice were walking to a ravine. When Ben went uphill to see where it was, a bear appeared from the bushes and looked as if it was going to attack Eunice. Ben, noticing this, transformed into Armodrillo to save her. He drilled down the hill and jumped out of the ground, ready to fight the bear. However, much to his shock, the bear didn't harm her. Instead it was attracted like the other animals, and it was letting her pet it. Ben changed back and asked her how she did that. She claims that she didn't do anything, but just knew it wasn't going to hurt her. Ben then went to show her where the ravine was. While he wasn't looking, a green flash shined from Eunice's hand while she was still touching the bear. She then followedd Ben and absent mindedly pushed a boulder out of the way.