To stop Ghostfreak (Zs'Skayr) from taking over an entire town, Ben makes the incredibly dangerous decision to let Ghostfreak possess him, hoping to control him within the Omnitrix. It is a thrilling, horror-infused callback to Ben's childhood nightmares. 32. "Trade-Off" (Season 3, Episode 15)
Ben’s clone, , splits into three separate Bens. The chaos of three arrogant teenagers trying to lead is hilarious, but it also introduces Alien X , the most powerful (and most boring) alien in the franchise—a reality warper who requires a committee vote to move his finger.
Alien Force follows Ben Tennyson five years after the original series. At 15, he has set aside the Omnitrix and is trying to live a normal life. However, when Grandpa Max goes missing, Ben is forced back into action. He soon discovers the Omnitrix has recalibrated, giving him ten new alien forms. He is joined by his cousin Gwen, who has honed her magical abilities, and his former enemy, Kevin Levin, who has become a reluctant ally. ben 10 alien force all episodes top
Tier 3: Good World-Building & Solid Action (Episodes 26–14)
The trio interacts with a shape-shifting alien box that mimics their abilities. It functions purely as a comedic distraction with minimal stakes. To stop Ghostfreak (Zs'Skayr) from taking over an
Vilgax seeks Ben's help after Vilgaxia is overtaken by Ghostfreak. It features excellent horror elements and brings back one of the original series' creepiest villains.
Ben tries to secure a normal date with his crush, Julie Yamamoto, at a local pier. The date is crashed by a frantic Galvanic Mechamorph named Ship. It is a charming episode that masterfully balances teenage romance with alien chaos. 30. "Birds of a Feather" (Season 2, Episode 5) "Trade-Off" (Season 3, Episode 15) Ben’s clone, ,
Ben loses the Omnitrix to Vilgax on a sentient planet. The breakdown of established lore and Ben's uncharacteristically childish behavior make this a frustrating watch.
The premiere that started it all. Seeing a mature Ben put the Omnitrix back on to save his grandfather sets a perfect tone for the era.