Ben 10: Ultimate Alien [ TRENDING VERSION ]

Following the battle with Aggregor, Kevin Levin mutates into a monstrous form after absorbing the Ultimatrix's energy, forcing Ben to make a dark choice about whether he must kill his best friend to save the world.

Ben must stop Aggregor, a rogue Osmosian, from absorbing five powerful aliens from the Andromeda Galaxy to reach the "Ultimate Prize" in the Forge of Creation. Ben 10: Ultimate Alien

The series is structured into three primary narrative arcs, each escalating in maturity and scale: Following the battle with Aggregor, Kevin Levin mutates