Decimus Prime is The Omnitrix's DNA sample of a Cybertronian from the planet Cybertron.
Decimus Prime is a giant white and green robot, with black parts around his body. He has green visors, two cannons on his back, and the Omnitrix symbol is located on his chest. He also has a green 10 marked on the left side of his chest. On his car mode, he looks like an altered version of Kevin's car, with green panels and a metal plate on the front. The Omnitrix is located on the hood. On his bike mode, he looks like the Tenn-Cycle without the top. The Omnitrix is located on his left side.
Powers and Abilities
Besides transforming into a musclecar and a motocycle, Decimus Prime is able to alter his arms to create weapons, such as guns or swords. He also has enhanced speed on his alt-modes, enhanced strength on his robot mode and enhanced durability on all of his three forms. He can also create guns when in his alt-modes.
Decimus Prime can be affected by Dark Energon, becoming a mindless zombie until he reverts back to Ben.
If he is badly affected by an electrical charge while on his alt-modes, he is unable to turn back to his robot mode.
Due to his size, he cannot enter in small spaces.