Way Big first appears in Ben 10: Secret of the Omnitrix, when Azmuth activates it on the Omnitrix so Ben can fight off Vilgax's army. His only appearance in the TV series itself was in "Ken 10" when Ben loses his temper and viciously beats Kevin into the ground after the latter pushes him too far by injuring Ken. This makes Way Big justifiably Ben's ultimate weapon. As soon as this form comes out, he can make short work of Vilgax and Kevin 11,000, something no other form has come close to doing.
Due to his enormous size, Way Big can easily overpower most of his opponents. His size also grants him incredible strength. He has also shown great durability, withstanding fire from enemies while barely even feeling them.
Ben 10: Alien ForceEdit
Way Big, like Upchuck and Cannonbolt, returns in the second season finale of Ben 10: Alien Force after Azmuth unlocks the Omnitrix master control. His eyes are now green instead of yellow, the spikes on his shoulders & arms are gone, his face is different, & the fins on his thighs are gone. This is due to the fact that the aliens age as Ben does.