S04 Episode 1

Perfect Day

Enoch and the Forever Knights return, putting Ben in a dream world where he's tricked into having the perfect day. However, his dream quickly turns into a nightmare.

22 mins · Sat, 7 Jul 2007

S04 Episode 2

Divided We Stand

Ben gains another Omnitrix hero to use, which he calls Ditto. Gwen can't stand being around the multiplying Dittos, and they end up giving her headaches. The Dittos, though, prove to be real helpful against Dr. Animo and his multiplying Stinkflies after he extracted some of Ditto's DNA.

22 mins · Sat, 14 Jul 2007

S04 Episode 3

Don't Drink the Water

After being in contact with water from the Fountain of Youth, Grandpa Max and Ben are reverted to being kids again. Now, Gwen is left to take care of them while stopping Hex from finding the fountain's source.

22 mins · Sat, 21 Jul 2007

S04 Episode 4

Big Fat Alien Wedding

Ben, Gwen, and Grandpa Max attend a family wedding. During the ceremony, a strange alien attacks. Will the two ever finish this strange wedding?

22 mins · Sat, 28 Jul 2007

S04 Episode 5

Ben 10: Secret of the Omnitrix

During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across space to track down the Omnitrix's creator, Azmuth.

22 mins · Sat, 4 Aug 2007

S04 Episode 6

Ben 10: Secret of the Omnitrix 2

During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across space to track down the Omnitrix's creator, Azmuth.

22 mins · Sat, 4 Aug 2007

S04 Episode 7

Ben 10: Secret of the Omnitrix 3

During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across space to track down the Omnitrix's creator, Azmuth.

22 mins · Sat, 4 Aug 2007

S04 Episode 8

Ben 4 Good Buddy

While on a desert highway, the RV gets stolen by a group of modern-day pirates, who use it to go on a robbery.

22 mins · Sat, 22 Sep 2007

S04 Episode 9

Ready to Rumble

When Ben accidentally breaks Gwen's laptop, he participates in the "Ultimate Wrestling Competition" as Four Arms to get the prize money for a new laptop to replace Gwen's broken one.

22 mins · Sat, 29 Sep 2007

S04 Episode 10

Ken 10

In the future, Ben gives his son, Ken, an Omnitrix for his 10th birthday. However, Ben will have to learn to trust him with that power.

22 mins · Sat, 6 Oct 2007

S04 Episode 11

Ben 10 vs. Negative 10 (1)

Ben, Gwen, Cooper and Grandpa Max face their last battle ever against the villains they have encountered and they will battle to get the world's most powerful energy source.

22 mins · Sun, 9 Mar 2008

S04 Episode 12

Ben 10 vs. Negative 10 (2)

The Forever King sets his plan in motion and recruits the most powerful enemies Ben has ever faced in order to steal the world's most powerful energy source.

22 mins · Sun, 9 Mar 2008

S04 Episode 13

Goodbye and Good Riddance

The summer finally ends. Ben and Gwen have to go back to their normal lives. Grandpa Max tells Ben to keep the Omnitrix a secret from everyone, even his parents. Ben agrees, but Vilgax arrives and he'll stop at nothing to get the Omnitrix.

22 mins · Tue, 15 Apr 2008

Season 4

Ben 10

Where to Watch

Season 4 Episodes

More Seasons of Ben 10