Ben 10 — Season 4
An alter ego for every occasion.
About this season
When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome powers. With such abilities at his disposal, Ben realizes a greater responsibility to help others and stop evildoers, but that doesn't mean he's above a little superpowered mischief now and then.
Episodes (13)
1. Perfect Day
5.7Aired 7 July 2007 • 22 min
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.
2. Divided We Stand
6.7Aired 14 July 2007 • 22 min
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.
3. Don't Drink the Water
7.0Aired 21 July 2007 • 22 min
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.
4. Big Fat Alien Wedding
7.0Aired 28 July 2007 • 22 min
Ben, Gwen, and Grandpa Max attend a family wedding. During the ceremony, a strange alien attacks. Will the two ever finish this strange wedding?
5. Secret of the Omnitrix (1)
6.0Aired 4 August 2007 • 22 min
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 spaceto track down the Omnitrix's creator, Azmuth.
6. Secret of the Omnitrix (2)
6.2Aired 4 August 2007 • 22 min
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 spaceto track down the Omnitrix's creator, Azmuth.
7. Secret of the Omnitrix (3)
6.2Aired 4 August 2007 • 22 min
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 spaceto track down the Omnitrix's creator, Azmuth.
8. Ben 4 Good Buddy
6.3Aired 22 September 2007 • 22 min
While on a desert highway, the RV gets stolen by a group of modern-day pirates, who use it to go on a robbery.
9. Ready to Rumble
6.5Aired 29 September 2007 • 22 min
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.
10. Ken 10
6.8Aired 6 October 2007 • 22 min
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.
11. Ben 10 vs. Negative 10 (1)
6.2Aired 9 March 2008 • 22 min
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.
12. Ben 10 vs. Negative 10 (2)
6.4Aired 9 March 2008 • 22 min
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.
13. Goodbye and Good Riddance
7.0Aired 15 April 2008 • 22 min
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.