E1 - Darkstar Rising

Aired: October 10, 2008

A new villain comes into town, his name is Darkstar, he commits some crimes and gets the team's attention fast

E2 - Alone Together

Aired: October 17, 2008

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.

E3 - Good Copy, Bad Copy

Aired: October 24, 2008

An alien impersonates Ben with hopes of using his Omnitrix to annihilate him.

E4 - Save The Last Dance

Aired: November 07, 2008

Kevin asks Gwen to the school dance; Ben fears he's losing control of the Omnitrix.

E5 - Undercover

Aired: November 14, 2008

Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.

E6 - Pet Project

Aired: November 21, 2008

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.

E7 - Grounded

Aired: November 23, 2008

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.

E8 - Voided

Aired: December 05, 2008

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

E9 - Inside Man

Aired: December 12, 2008

Ben and the gang rescue a runaway prisoner of the DNAliens.

E10 - Birds of a Feather

Aired: March 24, 2009

The gang helps the prince of the arachna-chimps regain power

E11 - Unearthed

Aired: March 25, 2009

Ben cares for a baby monster and helps locate its parents before the DNAliens find it.

E12 - War of the Worlds (1)

Aired: March 27, 2009

Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.

E13 - War of the Worlds (2)

Aired: March 27, 2009

Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.