Gorvan

Gorvan is a renegade Tetramand Plumber who abandoned his duty and started selling alien tech to the highest bidder.

Gorvan appears in Ben 10: Alien Force (Video Game) as a villain.

Powers and Abilities
Gorvan seems to look pretty obese, but he still has Tetramand enhanced strength, and even quite agile for some reason. He also uses a machine to heal himself while fighting Ben, making him pretty hard to beat.

History
Ben first meets Gorvan where he was fighting a group of Forever Knights, where he is after a mysterious component. Gorvan enlists Ben, Gwen and Kevin's help to find the rest of the components. He claims to be a Plumber and even knew Max Tennyson.

Secretly, Gorvan was working for the Highbreed and is on the run from the Plumbers. He tricked the trio into invading a Forever Knight's castle and fighting Vulkanus and his pick-axe aliens for another component.

Gorvan turned Kevin into a DNAlien and made him fight Ben, but luckily, Ben was able to defeat Kevin and change him back to normal, Gorvan then fights Ben, and used a rejuvenation machine to increase his stamina. Ben was still able to defeat him though and kept Gorvan captive with some holding-cells. It is unknown what happened to him after the game was over, though it seemed simple that he was put into Plumbers' captivity.

In Special Delivery Gorvan appeared as a cameo character in the background.

Trivia

 * Even though Gorvan is first introduced as a video-game character, he has his own action figure and his collective card shows what he looks like in the TV series. He also has a smaller toy in an Alien Creation two-pack with Upchuck.
 * According to Derrick J. Wyatt, Gorvan will appear in Omniverse.
 * Gorvan admits he could stand to lose a little weight.
 * Gorvan is shorter than average for a Tetramand.
 * Gorvan is one of the few Plumbers to have gone rogue and become a criminal. Before going rogue, he held the rank of Magister, making him currently the only known Magister to have gone rogue.
 * Gorvan didn't seem to be aware of the Highbreed's true plan, like the Forever Knights were.
 * Even though the Forever Knights were allies of the Highbreed, Gorvan fought them and used Ben and his friends to attack them and steal one of their components.