Ben 10,000: Back Again

Ben 10,000: Back Again is an episode of Ben 10: Unlocked.

Plot
The version of Ben 10,000 from Ultimate Alien encounters another problem at his headquarters. Gogislo, an alien of Clockwork's species, attacks Ben directly at his headquarters. His twin brother, Gogiolo, followed him and tried to stop him but failed. Soon, Gogislo traveled to the time when Ben was 19 years old. Gogiolo and Ben 10,000 also travel to the past to stop him.

Ben, Gwen, Kevin, Drake and Robert were all busy defeating an organic robot made by an unnamed doctor who asked them for help but disappeared to avoid getting charges for creating a destructive robot. While fighting, the robot disappears, and they are all sent to wondering where it had gone. Meanwhile, Ben 10,000 and Gogiolo went to the gang and asked if Gogislo came, who didn't. It turns out that Gogislo took the alien robot and sent it to wreak havoc over the GNR8R Pipeline, aimed to give electrical power to various planets it is connected with. Ben then goes to the pipeline and defeats the robot, but then Gogislo came, and a fight ensued. Gogislo had said to the rest, when they came, that he and Ben have a fight alone.

Ben was forced to dodge the lasers Gogislo gave. It was hard to fight him. Ben even used Wormhole to contain him but Gogislo actually managed to get out. However, Gogislo felt tired to fight Ben a while there too, so he went to the time when Ben was 12 years old, the "hidden years" of Ben as an alien hero. Ben 10,000 and the others (including the 19-year-old Ben) figured out where Gogislo went, and so they found him nearly killing the 12-year-old Ben. Because of this, even the other Bens were getting hurt. Gwen, however, managed to do a very dangerous spell on Gogislo to take away his powers. Gwen had read on a magic spell book that was given to her mysteriously which somewhat predicted such a situation like this would happen and that the spell was the only way to defeat Gogislo. It was said to be risky, but Gwen pulled it off. Soon, Ben 10,000 was able to restore the 12-year-old Ben to normal as well as cure Gwen.

Appearing Characters
So many aliens were used above there, listing all is not possible.