Vilgax is a ruthless, cruel and power-hungry alien warlord. His primary objective seems to be gaining the Omnitrix so that he can use it to take over the universe. He is a powerful and dangerous sadistic villian, known to be very manipulative and caring for nothing more than the uncompromising fulfilment of his goals. He comands a large intimidating ship filled with a vast army of robot drones. During his first attempt to retrieve the Omnitrix, Vilgax's ship engaged in a fire fight with the ship transporting the Omnitrix. His limbs were both destroyed because of the battle, causing him to be placed by his drones in a repair tank for healing. Eventually, his body was repaired and cybernetically enhanced, making him far taller and stronger than before. Thanks to his cybernetic enhancements, Vilgax became much taller and was granted immense strength and near invulnerability, allowing him to easily leap above skyscrapers and survive in space. His arms were equipped with boost steroids, allowing him to increase his own strength even further at will. Though it causes him great pain, the boosters give him enough strength to smash apart mountains with his bare hands. He proved to be quick, strong and durable enough to withstand Heatblast's most powerful firewave, break through Stinkfly's goo and once stop a full-speed XLR8. Diamondhead once shattered his own fist against Vilgax's bulk. For most of the original series, Ben was unable to defeat him alone, always winning thanks to external help. Vilgax's goal is to get the Omnitrix and use it to create an army capable of transforming into any alien to conquer the universe.
Copyright: http://ben10.wikia.com/wiki/Vilgax
http://ben10.wikia.com/wiki/Vilgax
Vilgax with boosted arms