Ben 10

1And Then There Were 10

Ben goes on a road trip with his Grandfather, and cousin Gwen for summer vacation. When they stop at a forest, a meteor crashes nearby. Ben approaches the remains, and a device attach's itself to his wrist. Now he can change into 10 different alien creatures. Ben must learn to use the watch and each alien with forces intent on taking the watch.

2Washington BC

Making a stop in Washington D.C., Max uses the watch to stop crime and rescue people, but he wants some reward. Grandpa Max tries to teach him what a hero really is, but his first encounter with Dr. Animo, a scientist who can mutate and control animals, will really teach him.

3The Krakken

4Permanent Retirement

The group goes to visit Aunt Vera whose now living in retirement community. Ben witnesses some of the residents climbing walls, and other superhuman behavior. When Grandpa Max, is affected it's up to Ben and Gwen to find out what's going on.

5Hunted

6Last Laugh

The Tennysons go to a circus, but something's bothering Ben. Ben leaves the circus as the Circus's Star performer, Zombozzo the Clown stars his act. Ben foils a crime, and returns to find the circus has disappeared, Grandpa Max is acting strange, and Gwen has vanished. Ben must overcome his personal fear to rescue his cousin.

7Kevin 11

8Tourist Trap

9The Alliance

10Lucky Girl

Ben foils Hex's attempt to steal a spell book, the museum gives him some souvenirs. Gwen gets jealous of the attention Ben receives. Ben gives her a souvenir. Soon she finds out it's a magic charm, and everything's going her way. Now the Tennysons have two superheros in the family.

11A Small Problem

12Side Effects

13Secrets

Ben wakes from a nightmare and says an alien is coming after him. Grandpa Max tells them they're going to Mt Rushmore immediately. The alien from Ben's dream attacks them along the way. Ben tries to fight him, but the alien seems to know the Omnitrix's abilities. Grandpa doesn't stop to help Ben, he and Gwen continue to their destination, he reveals some secrets to his past, and his connection to the alien. Grandpa hopes to gather some weapons to help Ben in his battle.

1Truth

2The Big Tick

3Framed

Different aliens are rampaging in San Francisco. The Government sends Federal Agents, Grandpa and Gwen spot an alien causing havoc suspect Ben. But Ben's not the culprit. They need to find the real culprit and how they're duplicating Ben's heroes.

4Gwen 10

Ben wakes up from a dream, and can't find the Omnitrix. The Tennyson's start their summer vacation, and go to the camp ground. While Ben helps Grandpa pitch up a tent, Gwen finds the Omnitrix. Ben must get use to his new supporting role and the fact that Gwen's got better control of the watch.

5Grudge Match

6The Galactic Enforcers

7Ultimate Weapon

8Camp Fear

9Tough Luck

10They Lurk Below

11Ghostfreaked Out

As Gwen applies to a prestigious Prep School, the circus freaks attack the school to get some quick cash. Ben changes to Ghost Freak to fight them, but something has changed. When he changes back to Ben, he discovers Ghost Freak has escaped the Omnitrix, and wants to rule the world. Ben must fight against one of his aliens.

12Dr. Animo and the Mutant Ray

13Back with a Vengeance

1Ben 10,000

Gwen is abducted through a portal. Ben changes to XLR8 and chases after his cousin. They find that Gwen's adult self came back in time to bring Ben into the future. She says that Ben's adult self has mastered the Omnitrix, but he still needs some help that only his younger self can provide. But it's not the combined threat of Dr. Animo and Vilgax that she's worried about.

2Midnight Madness

The Tennysons stop by a Super Mall. Ben participates in a hypnotists show. The next day they find out something was stolen from the mall and an alien may be involved. That night they find Ben sleep walking, and causing havoc. Now team Tennyson must keep Ben awake to prevent more chaos and find out who's behind Ben's sleep walking.

3A Change of Face

While visiting Salem, the Tennysons encounter Charmcaster. She casts a spell, and manages to capture Ben in a field, but Gwen interferes and gets caught in field, Charmcaster and Gwen switch bodies. While Charmcaster(as Gwen) gathers ingredients for another transference spell, Gwen (as Charmcaster) gets sent to juvenile hall. Gwen has to escape and get her family to realize a switch has taken place.

4Merry Christmas

While driving through the desert, the Tennysons find Santa's village. A small village that seems to celebrate Christmas all year. But there's something go on. One person mistakes Grandpa for Santa Claus and uses him in his plans. Ben and Gwen are starting to turn into elves, Ben and Gwen must work together to free themselves and rescue Grandpa Max.

5Benwolf

The Tennysons stop by a Native American Reservation to visit an old friend of Grandpa's. They are soon attacked by a Yenaldooshi, a werewolf, Ben fights him off as Wildvine. Soon Ben starts turning into a werewolf. The Team must track down the werewolf to cure Ben.

6Game Over

It's a rainy day, Ben challenges Gwen to a game of Sumo Samurai Slamdown. She starts beating him, Ben changes to Upgrade and regains his advantage, then lightning strikes the Rustbucket. Ben and Gwen end up inside the video game. The Omnitrix times out, and most of his Heroes no longer appear in the Omnitrix. Ben and Gwen must fight their way out of the video game.

7Super Alien Hero Buddy Adventures

8Under Wraps

9The Unnaturals

10Monster Weather

11The Return

The Tennysons stop by NASA to watch a space shuttle launch. But the launch is delayed. They find some alien interference, including the wolf, and mummy they had encountered earlier. This leads to an encounter with a new alien monster who says it's all part of someone else's master plan.

12Be Afraid of the Dark

With 3 Alien Monsters working with a fourth, Ben is going to need more help from Gwen and Grandpa, but he's too stubborn to realize it. The aliens are trying to create a shield around the Earth to block the sun, so that that their master, GhostFreak, will be at full power all the time. Team Tennyson must stop Ghostfreak's plans.

13The Visitor

1Perfect Day

Some of Ben's old enemies attack a school bus. Ben easily defeats them, the grateful cheerleader thank him. It's a start of a perfect day for Ben. Or is it? Duplicates of Grandpa and Gwen show up and tell him he's been captured, he's in a dream world, and the culprits are keeping him there so they can get the Omnitrix. Can Ben distinguish between what is and isn't real?

2Divided We Stand

3Don't Drink the Water

4Big Fat Alien Wedding

5Episode #4.5

6Ben 4 Good Buddy

7Ready to Rumble

8Ken Ten

9vs. Negative 10 Part 1

The Tennyson pick up Cooper, the grandson of a fellow plumber. They hear the Circus Freaks are at Fort Knox and go to stop them. But the Circus Freaks didn't take any gold, and they're not the only ones involved in the caper. When they finally figure out what the real objective is, they find the Negative 10.

10Goodbye and Good Riddance

11Episode #4.11

12Ben 10 vs. The Negative Ten: Part 2