Episode 1
The Pecking Order
January 1, 2008
Yin and Yang prepare to go on vacation. Coop returns and tried to warn them of The Night Master's energy escaping, but they ignore him until it's too late.
Episode 2
Party Favors
January 1, 2008
Coop's mom is throwing a "welcome back/thanks for saving the world all by yourself" party, and Yin and Yang are the only ones not invited. Meanwhile, three flunkies join together and try to get into The Night Master's fortress. However, they need the spare key, which the Night Master gave to Coop!
Episode 3
Smoke and Mirrors
January 21, 2008
Yin and Yang are pitted against each other in a fight.
Episode 4
Yin-Credible!
January 21, 2008
Yin takes credit for saving the mayor, without acknowledging Yang's help.
Episode 5
Brain Drain
January 28, 2008
Yang's brain becomes controlled by a villain known as Mastermind.
Episode 6
The Big Payback
January 28, 2008
Master Yo faces an old nemesis he has never been able to defeat.
Episode 7
Imperfect Fooplicates
February 4, 2008
Yin and Yang uses a magical bracelet to make fooplicates of themselves until Yuck returns.
Episode 8
Messy Relationships
February 4, 2008
Melodia the Aardvark Princess returns to claim Yang until Fastidous makes Yin mad with the Stink Aardvarks.
Episode 9
A Bad Case of the Buglies
February 11, 2008
Carl casts an ugly spell on Yin and Yang after Yin insults Carl and calls him a "buglie".
Episode 10
Control Issues
February 11, 2008
Yin and Yang learn self-control at an institute, but its founder, Ultimoose, may have more sinister plans in store.
Episode 11
Foreign Exchange Problem
February 18, 2008
Yin and Yang get a lesson in cultural enrichment when a foreign exchange student from Redneckistan named Jobeaux shows up. Meanwhile, the Chung Pow Kitties return in search of a powerful Woo Foo artifact. Yin and Yang suspect that there is more to Jobeaux than meets the eye.
Episode 12
Turnabout
February 18, 2008
Master Yo is sick of Yin and Yang disrespecting him. Yin and Yang are sick of Master Yo treating them like babies. When young Kraggler switches ages with Yo (part of a diabolical plan), Yin and Yang are forced to babysit the three-year-old Yo, and he reveals how powerful (and bratty) he was as a child.
Episode 13
The Manotaur
February 25, 2008
Yin and Yang attempt to defeat a half-human, half-bull monster.
Episode 14
League of Evil
February 25, 2008
Carl forms a league of evil with three other villains when they all rent an apartment together.
Episode 15
This Yang Isn't Brought To You By ...
March 3, 2008
Yang endorses a toy line for money but doesn't realize that the toys are harmful to children.
Episode 16
Stuck
March 3, 2008
Yin, Yang and some of their friends accept a free vacation to a mysterious island, not knowing that it's a trap set by Smoke.
Episode 17
Deja Foo
March 10, 2008
Ultimoose and Yang search for an amulet that will give them all of the Night Master's powers.
Episode 18
Gone-A-Fowl
April 7, 2008
Yin reluctantly goes on a date with Coop, and she falls under his evil spell.
Episode 19
Basic Yin-stinct
April 14, 2008
Carl tricks Yin into eating seeds that make her doubt everything.
Episode 20
Fighting Fooberty
April 14, 2008
Mr. Pondscum realizes he isn't a goldfish but a polliwog.
Episode 21
Yin Yang Carl
April 20, 2008
Carl magically switches brains with Master Yo in an attempt to destroy the Woo Fo warriors.
Episode 22
Smorks
April 20, 2008
Yin takes in some seemingly harmless green creatures as pets, but Yang believes they are dangerous.
Episode 23
Wonder Tweens Go!
April 28, 2008
Yin and Yang become addicted to a TV show about a superhero but learn they should focus instead on becoming heroes in real life.
Episode 25
O'Brother There Art Thou
May 5, 2008
When Yang separates himself from Yin and Master Yo, he saves a robot, and they start to act like brothers. But Yin is feeling suspicious and jealous and discovers the robot is actually a spy made by Zarnot sent to destroy Yang.
Episode 27
An Inconvenient Tooth
June 16, 2008
Yang develops a rare tooth condition and could end up as dinner on Edna's table.
Episode 28
Situation Tragedy
June 16, 2008
Carl traps Yin and Yang in a sitcom with a magic remote.
Episode 29
Skirting the Issue
June 23, 2008
Yang receives a powerful artifact, but it's a skirt and he refuses to wear it.
Episode 31
Clown-Fu Fighting
June 30, 2008
When Yang finds out that Master Yo knows a form of fighting known as Clown Fu, he wants to learn the various techniques for himself.
Episode 32
Cat Smash Fever
June 30, 2008
The Chung Pow Kitties are desperately trying to claim the Licking Stick in the Woo Foo Weapon armory as their very own.
Episode 33
Camp Magic Pants
July 7, 2008
Yin and Yang begin magic training at Camp Magic Pants and become involved in pranks that get them into trouble.
Episode 34
Worked Stiff
July 7, 2008
Yang takes a job at an amusement park that turns out to be anything but fun.
Episode 35
Mission Yinpossible
July 14, 2008
Yin and Yang attempt to prevent Carl from using a pair of magical slippers for evil purposes.
Episode 36
Disapp-Eared
July 14, 2008
Yang casts a spell that makes him disappear and unable to be heard.
Episode 37
Get Off My Back
July 21, 2008
Yin and Yang are magically stuck together by Mastermind so they will learn to cooperate with each other.
Episode 38
Slumber Party of Doom
July 21, 2008
Yin hosts her first slumber party but she drives everyone crazy with her strict schedule.
Episode 40
Dance, Dance Devastation
July 28, 2008
Yin and Yang play a cursed video game, which requires them to keep dancing or die.
Episode 41
Upstanding Yuck
August 4, 2008
Yin and Yang's former enemy Yuck returns and claims to be a reformed rabbit.
Episode 42
A Walk in the Woods
August 4, 2008
Yin and Yang meet a seemingly sweet old lady who really wants to fatten them up and serve them for dinner.
Episode 44
Today You Are a Bear?
August 18, 2008
Yin and Yang want to become bears, but an evil ranger tries to get them mauled by the animals.
Episode 46
For the Love of Clamboy
August 28, 2008
Yin tricks a clam into liking her so she can steal his jewels.
Episode 48
The Secret Life of Possum Panda
September 29, 2008
Yang seeks out a vigilante named Possum Panda, but he discovers solo crime fighting isn't all it's made out to be.
Episode 49
Dummy Up
September 29, 2008
Yang resorts to talking to a dummy after Master Yo leaves town, which infuriates Zarnot.
Episode 50
The Howl of The Weenie
October 13, 2008
Eradicus creates a monster that gains power by consuming everyone's fears, and Yin and Yang try to destroy it.
Episode 52
Creeping With the Enemy
October 27, 2008
Carl disguises himself as a normal kid to stop Eradicus from carrying out an evil plan that would make everyone bad.
Episode 53
The Yindianapolis 500
November 10, 2008
Yin and Yang are tricked into entering a dangerous car race.
Episode 54
Personality Problem
November 10, 2008
Yuck causes Yin and Yang to swap personalities so he can weaken them and seize power.
Episode 56
Splitting Hares
November 24, 2008
Yin and Yang team up with different partners to fight a common enemy.
Episode 57
Extra Cheese, Anchovies and Doom!
February 14, 2009
Yin and Yang tease a pizza-delivery man, so Master Yo makes them deliver pizzas on time or else become a slice themselves.
Episode 58
The Confidence Game
February 14, 2009
Master Yo goes to extreme lengths to get Yin and Yang to take fighting seriously.
Episode 59
Roboticus Maximus
February 21, 2009
Mastermind attempts to destroy the city while Master Yo is absent, so Yin and Yang assemble an army to fight him.
Episode 61
Unmoving Pictures
February 28, 2009
Yin and Yang are tricked into starring in a movie that is actually a trap set by Eradicus to destroy them.
Episode 62
The Recline and Fall of Civilization
February 28, 2009
Master Yo's recliner is discovered to be inhabited
Episode 63
Mind Games
March 7, 2009
Master Yo tries to teach Yin and Yang how to prevent Ella Mental from reading their minds.
Episode 64
The Carl of the Wild
March 7, 2009
Yin searches for a rare wild beast to protect it from hunters.
Episode 65
Clothes Encounters
March 14, 2009
Yin and Yang's dirty-laundry pile turns into a monster and escapes into town.
Episode 66
Commander-in-Cheat
March 14, 2009
President Muffins enlists help from Yin and Yang in a bid to get reelected.
Episode 67
Party Troopers
March 21, 2009
Yin and Yang throw a party, but Eradicus plans to crash it so he can destroy them.
Episode 68
Shadowcluck
March 21, 2009
Yin falls in love with Coop once again, but their relationship blinds them to Eradicus' plan to destroy the town.
Episode 69
Yin! Yang! You!
April 5, 2009
Leena meets Jason Earles and Mitchel Musso when she lands in Earles' backyard in Hollywood, where the two friends argue over who has the best hair.
Episode 70
Division Quest
April 11, 2009
Eradicus tries to divide the Woo Foo army in order to conquer it. He then takes a vacation at a spa where Master Yo is staying, and the two enemies attempt to get along for the duration of their stays.
Episode 71
Yin, Yang... Who?
April 18, 2009
Yin and Yang search for their parents after Yin is drained of her aura and only a transfusion from a parent will save her.