Ben 10: Invincible Alien/Episode Guide

Return of Aggregor, Part 1
Aggregor is back! But when he's beating Ben easily, he does something unexpected. What's Aggregor really up to?

Return of Aggregor, Part 2
Aggregor has absorbed the Ultimatrix and is unstoppable and Ben can't find a way to beat him. When Azmuth gives Ben the ultimate prize can he defeat Aggregor even with Aggregor's huge amount of new powers?