Ben 10: Ultimate Alien All Episodes Work Jun 2026

Major story arcs and highlights

The final season focuses on an ancient, cosmic threat known as Diagon, which leads to a massive crossover with the Ben 10 lore, including the Forever Knights.

Season 2 transitions from the cosmic threat of Aggregor to ancient, supernatural horrors. The overarching plot introduces the Flame Keepers' Circle, a cult worshipping a mysterious entity known as Dagon. Episode 21: "The Transmogrification of Eunice" ben 10: ultimate alien all episodes

– The Ultimate forms inside the Ultimatrix gain sentience and trap Ben inside his own device to gain their freedom.

: The team discovers Eunice, a human-like prototype of the Omnitrix (the Unitrix). Ben 10,000 Returns Major story arcs and highlights The final season

The team fights to stop Aggregor from entering the birthplace of Celestialsapiens.

Ben 10: Ultimate Alien All Episodes – A Complete Episode Guide and Ultimate Watchlist Episode 21: "The Transmogrification of Eunice" – The

– Cash and J.T. start a web show claiming they are the brains behind Ben's heroic deeds.

Ben 10: Ultimate Alien premiered on , on Cartoon Network in the United States. The series picks up shortly after the events of Alien Force, with Ben having destroyed his original Omnitrix. He is now armed with the Ultimatrix , a gauntlet-like device that not only allows him to transform into his classic alien heroes but also to evolve them into "ultimate forms"—vastly more powerful versions designed by simulating a thousand years of genetic warfare.

The Forever Knights wage a unified war against all aliens living on Earth. Ben threatens the Knights with his Ultimate forms to force a truce. Season 3: The Dagon War (Episodes 33–52)

Old George reclaims his magical sword and prepares the Forever Knights for a holy war against Dagon. Vilgax betrays the cult to absorb Dagon's power. Episode 42: "Solitary Alignment"