Ben 10:: Omniverse Episodes

– Professor Paradox gathers the remaining good alternate Bens, including a version who never found the Omnitrix, to save reality.

The final season raises the stakes to a cosmic level. Chronosapiens, Time Walkers, and Maltruant vie for control over the timeline of the universe itself.

– An old villain, Megawatt, returns, causing chaos for Bellwood's electrical grid.

The climax of the Incursean invasion. It features excellent tactical combat, a desperate human rebellion, and the debut of Bullfrag.

These standout episodes feature a team-up of Bens from different timelines, including "No Watch Ben" and "Ben 23," to stop Vilgax and Eon from erasing every Ben Tennyson across the multiverse. The Rooters Saga:

The arc reintroduces Ben at 16, now working for the Plumbers as a full-time officer. Rook is introduced. The primary antagonist is Khyber the Huntsman , a predator who collects DNA samples. The arc’s climax introduces Malware – a mutated Galvanic Mechamorph who can absorb other tech. Malware is unique as a villain because he evolves across episodes, becoming more dangerous.

– Takes a spooky turn with monster-themed aliens like Whampire and Snare-oh.

(2012-2013)

The series finale. Ben cycles through every single alien transformation in a spectacular sequence to hold a universe-creating device, bringing the franchise full circle. Notable Standalone and Fan-Favorite Episodes

– Zombozo uses a virus to turn the entire population of Bellwood into zombie clowns.

A fun, high-stakes invasion story that perfectly blends humor with action.

– Introduces Ben's new partner Rook and the secret underground alien city, Undertown.

The series moved away from "monster-of-the-week" formats toward multi-episode arcs that feel more like a cohesive narrative. The Malware Saga

A cinematic two-parter where Earth falls to the Incurseans. It showcases Rook's tactical brilliance and features the triumphant debut of Bullfrag.

| Arc | Episodes | Plot Summary | | :--- | :--- | :--- | | | 10 | Ben gets a new partner, Rook, and uncovers the hidden alien city of Undertown under Bellwood. He faces the intergalactic hunter Khyber, the malfunctioning Mechamorph Malware, and tests his new aliens Feedback and Bloxx. | | Arc 2: Malware's Revenge (2012-13) | 10 | Malware's schemes intensify, causing chaos in the Omnitrix and threatening Galvan Prime. Ben meets Rook's family, and the arc culminates in "Showdown: Part 2," where Malware is seemingly destroyed. | | Arc 3: Incursean Invasion (2013) | 10 | The Incurseans, a warmongering race of frog-like aliens, launch a full-scale invasion of Earth. The two-part episode "The Frogs of War" serves as the climax of this high-stakes conflict. | | Arc 4: Duel of the Duplicates (2013) | 10 | Ben and Rook team up with the Secret Saturdays, a family of cryptozoologists. They hunt down the terrifying Vladats and uncover secrets about Ben's alien heritage. | | Arc 5: Galactic Monsters (2014) | 10 | Whampire, Ben's newest alien (a Vladat), takes center stage. The arc explores the dark history of the Vladats and introduces the fearsome Lord Transyl. | | Arc 6: The Evil Rooters (2014) | 10 | This arc deals with Kevin's past and the Rooters, a sinister organization. The two-part episode "Weapon XI" puts Kevin and the Amalgam Kids in a direct confrontation with Ben. | | Arc 7: The Mad Ben (2014) | 10 | A multiverse adventure where Ben and his rival Dr. Psychobos are thrown into a dimension ruled by a tyrannical version of Ben. They must work together to escape. | | Arc 8: Time War (2014) | 10 | The grand finale. The time-traveling villain Maltruant attempts to unmake creation. All of Ben's allies unite to stop him, including previous Ben 10K's (older versions of Ben from potential futures) as the clock ticks down to the series' final confrontation. |

– A chronosapien time mishap causes 11-year-old Ben and 16-year-old Ben to swap minds across timelines.

This is the horror-themed arc. Episodes lean into darker visuals and body horror (Malware’s assimilation). The standout is “The Color of Monkey” (S3E10) where Ben transforms into a new alien, Whampire , for the first time. The arc ends with Ben temporarily losing control of the Omnitrix due to a DNA splice.