Vilgax and Eon team up to wipe out every Ben in every dimension.

Professor Paradox unites the good Bens from across all dimensions to take on Vilgax, Eon, and the evil Bens in the ultimate showdown.

Ben must deal with a past failure; a deranged Malware launches his final attack.

Ben and Rook follow Maltruant through the time stream. Ben has an adventure with George Washington, in 1773, fighting Maltruant and Vilgax. After defeating Vilgax, Ben and Rook chase Maltruant in the time stream to the beginning of time itself onto the starship of the Contemelia (the creators of the Annihilaarg) where Maltruant attempts to create a universe of his own using his own Anihilaarg. In a climactic battle, at the beginning of time Ben nearly dies trying to stop Maltruant from building his own universe but then it is revealed that the Omnitrix has a fail-safe to prevent its keeper from dying.

The Time War races towards its dramatic conclusion, with the fate of the entire universe and everything in it since the very beginning of time resting in the hands of Ben 10!

When Eon forces young Ben and teenage Ben to switch minds, only the time-traveling Professor Paradox can sort things out and help Ben stop Eon from taking over the timelines.

Ben, Skurd, and Rook find themselves caught in an endless time loop as enemies from the future converge on Bellwood.

The Incurseans take control of Earth, so Rook and the Plumbers must mount a resistance while Ben is missing.

Ben, Rook and Grandpa Max must stop Ultimate Albedo from absorbing all of Azmuth's profound knowledge and taking over the galaxy. Gwen and Kevin show up just in time to help with their struggle.

Ben must deal with a past failure while a deranged Malware launches his final attack on Azmuth.

The Incursean Armada, with the help of Dr. Psychobos, have invaded the Earth.

Ben gets dragged into intergalactic court by the other Celestialsapiens for recreating the universe.

Kevin and Argit attempt to warn the Amalgam kids about the Rooters intentions. Meanwhile, Ben, Rook, and Gwen set off to find Kevin and land themselves in the Null Void.

With the help of Dr. Psychobos, Ben 23 and Ben Tennyson successfully stage a breakout and a revolution in Mad Ben's labor camp.

Albedo, disguised as Ben, seeks a device that will finally change him back into his Galvan form. Meanwhile, the real Ben is locked in Albedo's prison cell at Plumber HQ.

After Ben falls for Albedo's trap, Grandpa Max and Rook search all over the galaxy looking for Ben. Meanwhile he's secretly trapped on Khyber's hidden personal hunting preserve fighting Khyber's new pet that now wears the Nemetrix.

The Rooters have seemingly turned Kevin and the Amalgam kids against Ben. Can Rook and Gwen help him overcome the opposition and escape the Null Void?

A dangerous Chronosapien named Maltruant attempts to obtain total control over the time-space continuum with the help of an old relic called the Key to Time; Ben 23 is sent by the Azmuth of his dimension to Ben Tennyson's dimension in order for the latter to act as a "mentor" to the former.

Ben meets an alternate version of himself while searching for a 23rd Mr. Smoothy's store.

Charmcaster attacks Gwen at Freakin' University, wanting to obtain Hex's mystical Staff of Ages through any means necessary, while Kevin and Rook try to make Kevin's car completely indestructible so that nothing can destroy it.

Ben finally manages to rid himself of Skurd... just when he needs the Slime-Biot most.

While trapped in Khyber's ship, Khyber tells Ben that he needs different alien DNA to complete the evil incomplete version of the Omnitrix the Nemetrix. He also reveals that Dr.Psychobos assigned him to hunt down various species for DNA to transfer it to the Nemetrix.

Meet the Rooters, the Black Ops wing of the Plumbers from the Null Void. They've come looking for someone close to Ben, and they mean business.

Ben and Rook are attacked by Khyber at a festival.

Khyber, aided by a booger-like Slimebiote named Skurd, attacks Ben & co, but the tables turn when Skurd gloms onto Ben!