Driven mad by the massive influx of absorbed alien DNA, Kevin reverts to a mutated monster and goes on a destructive rampage.
Find or crew information for specific episodes.
The final season brings together the Forever Knights and a mysterious religious cult called the Flame Keepers' Circle. Both groups are fixated on the return of the Diagon, culminating in an apocalyptic battle for Earth.
– Julie joins a French eco-group, creating a rift between her and Ben. Ship goes rogue to rescue her, forcing Ben to track them down.
: Kevin absorbs the Ultimatrix's power to defeat Aggregor but goes insane, leading to a final showdown with Ben. Ben 10 Wiki Season 2 (12 Episodes) ben 10: ultimate alien all episodes
– Will Harangue funds a giant robot programmed with Ben's combat moves. Ben must fight it live on television using a brand-new alien form, Nanomech.
With his new powers, Aggregor seeks the four pieces of the Map of Infinity to reach the Forge of Creation. To stop him, Kevin makes a devastating sacrifice.
– Ben uses Echo Echo to split into three copies to watch Julie's tennis match, a movie with Kevin, and fight Forever Knights simultaneously.
– The grand finale arc begins. The Forever Knights fight a full-scale war against the Flame Keepers' Circle outside Dagon's dimensional gateway. Vilgax breaks the seal, allowing Dagon to prepare his entry into Earth's dimension. Driven mad by the massive influx of absorbed
– The team travels to the water planet Mykdl'dy. Aggregor beats them to the first piece of the Map despite Ben transforming into Ultimate Big Chill.
Ben 10: Ultimate Alien consists of aired between 2010 and 2012. While production divided these into different blocks, they are most commonly grouped into three seasons. Season 1 (20 Episodes) This season focuses on the Aggregor Arc
This article provides a complete breakdown of every episode, chronological story arcs, and key character evolutions. Series Overview and Core Arcs
– The conscious minds of Ben's Ultimate alien forms become trapped inside the Ultimatrix's internal database. They view Ben as their oppressor and demand their freedom, forcing Ben to make the ultimate sacrifice to save them. Both groups are fixated on the return of
This season focuses on Ben's life after his secret identity is revealed to the world and his battle against the intergalactic criminal, Ben 10 Wiki
Ben 10: Ultimate Alien represents a dark, mature, and high-stakes chapter in the franchise. Following the events of Ben 10: Alien Force , 16-year-old Ben Tennyson is no longer a secret hero. His identity is exposed to the world, turning him into an instant celebrity scrutinized by the media, idolised by kids, and targeted by new galactic threats. With the Omnitrix destroyed, Ben wields the Ultimatrix—a powerful device that allows his alien forms to evolve into their "Ultimate" states.
Season 1 introduces a 16-year-old Ben whose secret identity is leaked to the world by a young fan named Jimmy Jones. While the public is split on whether Ben is a hero or a menace, a dangerous new villain named Aggregor arrives to kidnap five powerful aliens from the Andromeda Galaxy.
The team tracks Aggregor into Ledgerdomain, the magical home dimension of Charmcaster, to secure the third piece of the Map. Episode 15: "Perplexameron"
– Julie leaves for a tournament, but her replacement behaves suspiciously like a perfect robot.
– Ben's old enemies team up to target his family after learning his real identity.