Technorg

Technorg is a Detrovite that was captured by Slix Vigma to fight on the Megacruiser and became the champion. His strength is in par with Fourarms likely due to several cybernetic enhancements to his left arm and he has a large mace instead of a hand.

Backstory
He appears in Grudge Match starting as an enemy of Ben and Kevin. Slix Vigma forced Ben and Kevin to fight Technorg and they defeated him. Slix Vigma commanded Ben and Kevin to kill him and though Kevin did not hesitate to do so, Ben stopped him. When they returned to their cell, Technorg bowed before Ben and Kevin and declared that he would serve Ben for sparing his life. With the help of Technorg and the other prisoners, Ben and Kevin were able to escape the cell.

Later, though the prisoners got into their escape pods and went to their home planets. Technorg did not, repeating to Ben that his life belonged to Ben but Ben pushed him into his escape pod. Just when Kevin was about to keep Ben from escaping, Technorg pulled Kevin away from his escape pod(he got out after Ben pushed him into his own). Before his departure, Ben believed that he and Technorg were even. Technorg is last seen about to beat up Kevin as the Megacruiser leaves for the next galaxy.

Technorg's final fate is unknown but during the Ben 10 Week in a pop-up factoid, it was revealed that he beat Kevin up and escaped.

Trivia

 * He bears a striking resemblance to Vulkanus. This is due to being the same species.