– The team destroys a Highbreed teleportation tower with the help of Cooper, a tech-genius old friend.
Gwen forces Kevin to take her to her high school spring formal dance. Meanwhile, Ben's Necrofriggian alien form, Big Chill, takes complete control of his mind, flying around the city eating metal to build a nest for newborn alien offspring. 18. Undercover
— After a teleporter accident, Ben and a Highbreed officer named Reinrassig III are stranded alone on a desert planet. Forced to work together against deadly alien predators, they form an uneasy alliance and eventually become friends. This episode famously lays the foundation for the Highbreed's redemption. all ben 10 alien force episodes
Kevin steals the Rust Bucket to trade for a device that can track Grandpa Max.
With the Highbreed threat resolved, Season 3 shifts focus back to classic lore. Ben's hubris grows after saving the universe, leading to reckless decisions, broken equipment, and the return of his ultimate nemesis, Vilgax. – The team destroys a Highbreed teleportation tower
– The Forever Knights attempt to build a massive laser weapon by kidnapping Ship, the pet alien Ben and Julie rescued in Season 1.
(S3E4, Sep 25, 2009) – Goat‑like aliens come to Earth for their popcorn festival, but one of them eats meat and mutates into a monster that must be contained. This episode famously lays the foundation for the
The entire scenario is revealed to be a test designed by Max to check their teamwork. Episode 43: Vendetta
(S3E5, Oct 9, 2009) – An alien named Probity asks Ben to end the endless war ravaging her planet. Ben must find a diplomatic solution, not a violent one.