(2011-2012)
"And Then There Were None" / "And Then There Was Ben" – A massive crossover featuring Ben Prime, Gwen 10, Ben 10,000, and No-Watch Ben. Arc 8: The Time War (Episodes 71–80)
| # (Overall) | # (in Season) | Episode Title | Original Air Date | | :--- | :--- | :--- | :--- | | | 1 | "T.G.I.S." | Oct. 5, 2013 | | 32 | 2 | "Food Around the Corner" | Oct. 11, 2013 | | 33 | 3 | "O Mother, Where Art Thou?" | Oct. 18, 2013 | | 34 | 4 | "Return to Forever" | Oct. 25, 2013 | | 35 | 5 | "Mud is Thicker Than Water" | Nov. 2, 2013 | | 36 | 6 | "OTTO Motives" | Nov. 9, 2013 | | 37 | 7 | "A Fistful of Brains" | Nov. 16, 2013 | | 38 | 8 | "For a Few Brains More" | Nov. 23, 2013 | | 39 | 9 | "Max's Monster" | Dec. 7, 2013 | | 40 | 10 | "The Color of Monkey" | Dec. 14, 2013 | ben 10: omniverse episodes
| Ep # | Title | Summary | |------|-------|---------| | 1 | The More Things Change: Part 1 | Ben gets a new Omnitrix and meets Rook. Fights the Vengers and a new threat: Malware. | | 2 | The More Things Change: Part 2 | Malware absorbs tech; Ben learns the Omnitrix resets daily at midnight. | | 3 | A Jolt from the Past | Flashback to 11-year-old Ben fighting a bioid army with Captain Nemesis. | | 4 | Trouble Helix | Malware hunts Azmuth. Ben discovers Malware is a defective Galvanic Mechamorph. | | 5 | Have I Got a Deal for You | Khyber captures Ben for his "ultimate hunting challenge." | | 6 | It Was Them | 11-year-old Ben accidentally unleashes a dimension-hopping squid monster. | | 7 | So Long, and Thanks for All the Smoothies | A time beast devours Mr. Smoothy stands; Professor Paradox explains the Time War. | | 8 | Hot Stretch | Rook’s hero-worship of a retired plumber leads to trouble. | | 9 | Of Predators and Prey: Part 1 | Khyber unleashes the Nemetrix (a predator-focused Omnitrix). | | 10 | Of Predators and Prey: Part 2 | Ben nearly dies; Rook saves him. Malware steals the Nemetrix data. |
"Weapon XI: Part 1 & 2," "Food Around the Corner." 5. Arc 5: Galactic Monsters (Episodes 41–50) (2011-2012) "And Then There Were None" / "And
The Ultimate Guide to Ben 10: Omniverse Episodes: A Complete Chronological and Narrative Breakdown
– With the help of Ben 23 and Professor Paradox, Ben overthrows Mad Ben's regime. 11, 2013 | | 33 | 3 | "O Mother, Where Art Thou
This arc recontextualizes the lore of Ben 10: Alien Force . It reveals that the "Osmosian" species was a cover-up engineered by a rogue black-ops Plumber unit called The Rooters, led by Proctor Servantis.
The introduction of the Nemetrix. Watching Ben’s Humungousaur get hunted by a Tyrannopede is horror-movie stuff. It establishes Khyber as a threat on par with Vilgax.