Series endgame. Vilgax uses the Omnitrix's original failsafe to become Vilgax 10 (combining 10 aliens into his body). Ben unlocks his final new alien, Cannonbolt (returning from the original series).
Swampfire, Humungousaur, Jetray, Big Chill, and others. Season 2: The Highbreed War ben 10 alien force all episodes top
Alien Force succeeded because it respected its audience. It transitioned from a Saturday morning cartoon to a teen drama with sci-fi elements. It gave us , which remains one of the best "bad boy gone good" stories in animation, and it expanded the lore of the Plumbers from a small secret society to a galactic police force. Series endgame