The following is a list of episodes of the American animated television series Ben 10: Omniverse. Only forty episodes were ordered at first with the 2010 Cartoon Network Studios logo, but as of August 25, 2012, production of episode forty-one began, with twenty more episodes being ordered, bringing the total up to sixty. However it has been expanded to eighty in June 2013. The eighty episodes have been broken into eight story arcs of ten episodes each. The episodes are being aired out of intended, production order. It has 2 Cartoon Network Studios logos for 80 episodes the 2010 one for episodes from seasons 1-4 and the present one for 5-8. The table below shows broadcast order of episodes.
Five years ago, Ben Tennyson faces off with a new enemy, a red Galvanic Mechamorph, Malware. Five years later, Kevin and Gwen leave when Gwen takes early enrollment in an Ivy League college, and Kevin moves to be near her. Ben is forced to fight crime alone, but Grandpa Max (Magister Tennyson – the commander of the Earth-base's Plumbers) gives him a new partner, rookie Plumber Rook Blonko. Ben and Rook end up in their first team-up when Mr. Baumann's store is targeted for destruction by three alien criminals (Bubble Helmet, Fistina, and Liam) as part of their protection racket. An intergalactic hunter named Khyber watches Ben from the shadows.
After stopping Bubble Helmet, Fistina, and Liam from blowing up Mr. Baumann's superstore, Ben and Rook discover an underground alien city named Undertown where they discover that Psyphon is behind the protection racket. At the same time, Khyber sends his pet in the form of Buglizard to hunt Ben.
The Megawhatts that Ben fought in his youth come back. This time, they need Ben's help when they are being used as a power source for the villain Fistrick and his gang.
Teaser: Infiltrating the Plumbers' base, Khyber downloads footage of young Ben's encounter with a corrupted Mechamorph named Malware.
Main Plot:Young Ben Tennyson faces Malware for the first time when he attacks Galvan Prime.
Ben meets an alien con artist named Professor Blarney T. Hokestar whose miracle elixir is extracted from a small alien called a Screegit that is kept in his lab. When a Florauna activist named Pax convinces Ben to help him free the small alien from Hokestar's lab, chaos ensues when the nitrogen in Earth's atmosphere turns the exposed Screegit into a giant, acid-spitting monster with Ben having to keep it from wrecking the city.
Dr. Animo has escaped his Plumber prison, and Ben and Rook must track him down before he transforms the world into his personal mutant ant farm.