第 2 季 共 13 集
播出时间:2008年10月11日
第 1 集 Darkstar Rising
播出时间:2008年10月11日
A new villain comes into town, his name is Darkstar, he commits some crimes and gets the team's attention fast
第 2 集 Alone Together
播出时间:2008年10月18日
During a battle Ben and an alien commander are teleported to a distant world. They must put their differences aside if they're going to have any chance of finding a way to return to Earth.
第 3 集 Good Copy, Bad Copy
播出时间:2008年10月25日
An alien impersonates Ben with hopes of using his Omnitrix to annihilate him.
第 4 集 Save The Last Dance
播出时间:2008年11月8日
Kevin asks Gwen to the school dance; Ben fears he's losing control of the Omnitrix.
第 5 集 Undercover
播出时间:2008年11月15日
Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.
第 6 集 Pet Project
播出时间:2008年11月22日
To find and destroy the alien dragon species, the Forever Knights capture Ship to control a starship they built out of alien technology to locate their homeworld and destroy them.
第 7 集 Grounded
播出时间:2008年11月24日
When Ben's parents discover his ability to turn into aliens, they forbid him from using the Omnitrix and later ground him from using it again. Eventually Gwen is grounded too leaving Kevin to stop the DNAliens.
第 8 集 Voided
播出时间:2008年12月6日
After Gwen receives an S.O.S. from Helen, Ben must go into the Null Void to save her and Manny. Once there, he must find The Wrench in order to stop D'Void, who happens to be Ben's old enemy Dr. Animo
第 9 集 Inside Man
播出时间:2008年12月13日
Ben and the gang rescue a runaway prisoner of the DNAliens.
第 10 集 Birds of a Feather
播出时间:2009年3月25日
The gang helps the prince of the arachna-chimps regain power
第 11 集 Unearthed
播出时间:2009年3月26日
Ben cares for a baby monster and helps locate its parents before the DNAliens find it.
第 12 集 War of the Worlds (1)
播出时间:2009年3月28日
Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.
第 13 集 War of the Worlds (2)
播出时间:2009年3月28日
Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.