Camille Mann-Tennyson

Camille Mann is a Sludgepuppy. The Sludgepuppies are shapeshifting aliens that were apparently at war with the Plumbers. She wanted peace on Earth by getting married to the Plumber, Joel Tennyson. Her Sludgepuppy form is humanoid, but according to the flashback, it seemed that she had changed after she met Joel.

Powers and Abilities
Camille's body is made out of a purple mud-like substance with shapeshifting properties, such as turning into a human being (and presumably any other species). Other abilities include elasticity, the ability to shape her body parts into anything, and super strength.

Unlike most Sludgepuppies, Camille's true form is a sharp contrast; it is humanoid in appearance but has an elongated head. However as shown in the flashback to how she and Joel met she has a more typical sludgepuppy form that she can shift to.

Ben 10

 * Big Fat Alien Wedding (first appearance)

Trivia

 * According to Matt Wayne, there are no plans for Camille to return.