Yang hurts Yin's feelings when he starts training under Ultimoose.

Master Yo gives his young protégés a test, which involves having them watch a seemingly harmless rock named Hershel.

Carl, the Evil Cockroach wizard, gives Yin and Yang a new TV with only one remote. Yin and Yang fight over the remote...

Yin and Yang tell Yo that he is old, and Yo makes them pick up his medication. Yo throws a party to look cool, but Yi...

Yin and Yang wish to lose their bossiness and aggression and in the process accidentally create a new villain, Yuck.

Yang fakes being a Woo Foo Warrior to impress a girl. To prove his skills, he has to take out a huge steel beetle.

Yin and Yang try to teach Yo that it's not good to boss kids around, but little do they know, Herman the Evil Ant is ...

Yin and Yang get into a fight while cleaning their room, and when Yin costs Yang the world record at a video game, he...

Yin comes down with a case of the Woo Foo Flu, an illness that causes her to bend reality whenever she sneezes. Maste...

Yin and Yang use Zarnot to boost their popularity by lying. When Zarnot becomes huge, they must prove that they are t...

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Yin's Woo Foo Aura gets out of control, trying to save the environment and escapes Yin's body, destroying the town.

Yin falls in love with a person named Brett who actually turns out to be Yuck.

Yin and Yang have to stop Pondscum from stealing Yo's golden chair.

Kraggler uses the cronalogicum to trade ages with Yin and Yang so he can become young again.

Yang won a doll at the county fair for Yin, but the doll is actually Zarnot.

Yo tells Yin to go to the valley of the two-ni-corns and find a rainbow mane The Gnu to fix her toy. Meanwhile, Yang ...

Saranoia makes a snow day so that Yin and Yang can play outside and Yin may have a day off, as she holds an obsession...

The Night Master rebuilds his armies that were frozen years ago by Master Yo. Little do they know, Yin and Yang are i...

Yang is thrilled that the CPK (Chung Pow Kitties; a pastiche of Hello Kitty and Powerpuff Girls), a rock band made of...

Yin meets a hamster who loves to clean while she is out buying cleaning supplies. The hamster reveals himself to be F...

Yin and Yang are fishing when a group of female pirates appear. They act really nice towards Yin, but not so much tow...

Carl wants to use his mother's destructive jewelry for his nefarious purposes (especially since she never wears them)...

Master Yo shows Yin and Yang that black-and-white films can be scary.

Yin uses the misfortune cookies on Yang to take away his good luck.

Yang is really interested in a girl named Lina, who is Yin's really good friend. The trouble is, Yang's behavior turn...

Yin and Yang are fed up with not getting an allowance from Master Yo for doing chores around the dojo. Then a strange...

Yin and Yang host an awards show for evil Brother Herman.

The Night Master hides in Yang's imagination.

A new master is in charge.

A fun road trip serves as a cover for a covert operation.

Dressed as a donkey, Yin and Yang infiltrate a bad-guy convention.

Saranoia returns.

Yin and Yang meet the legendary Woo Foo twins.

Coop teams up with Yin and Yang to win back an ancient Woo Foo artifact.

Herman and Carl want to give their mom a pair of rabbit's feet for luck.

Master Yo's ex-girlfriends show up.

Yang finally makes some guy friends, but they're not who they say they are.

Brother Herman attacks while Master Yo is away.

A heavy-handed hero teaches everyone a lesson.

Yin and Yang wonder if Master Yo is really evil.

Yang acts up in a video game.

Yin and Yang are put on trial.

Yin and Yang follow Yuck to a terrifying place... inside Master Yo.

Shaggler turns into a baby.

Yang uses an ancient tool to end Yin's constant pursuit of popularity.

Yin and Yang are promoted.

Information on Yin and Yang is leaked to the Night Master and the twins try to find the culprit.

The Night Master plots to kidnap Master Yo so he can plunge the world into darkness and be free.