Western Animation: Yin Yang Yo!

"In a world of chaos and disarray
Brother and sister save the day!"

"When might and magic work as one
A villain's plan can be undone!"

Yin Yang Yo is an Animated Series which aired in Toon Disney's Jetix block (later Disney XD). It retains the same creative team behind Nickelodeon's The Fairly Oddparents and Danny Phantom so naturally there are quite a few similarities; in addition, the animation style is very reminiscent of Wow! Wow! Wubbzy!! due to both shows sharing the same creator.

Yin and Yang are twin rabbits: the former, a studious and socially aware girl, is constantly mortified and embarrassed by her dirty, disheveled, violent, greedy, and self-indulgent (but still miraculously on the side of good) brother, Yang. Together, they study the ancient art of Woo Foo under the tutelage of the grumpy old panda Master Yo, who once had his own Woo Foo glory days.

Yin's studies are Woo Foo magic while Yang's are Woo Foo combat, hence the "might and magic" standard above. They both are eager to prove themselves, partly because they want to master what they've learned, but also because the Big Bad has rendered it so the entire world thinks Woo Foo is stupid and laughable. The problem is that, as twins and polar opposites, they get on each other's nerves and get in each other's way often but, when they do finally set aside their differences and actually work together, they prove to be very formidable.

Feel free to contribute to the Character Sheet

This series provides examples of:

  • Action Girl: Yin and eventually Lena after she learns how to use Woo Foo.
  • Added Alliterative Appeal
  • Aerith and Bob: Aside from the titular protagonists who have names derived from the Taoist philosophy, there's normal English names like Dave, Lina, Roger, and Coop. Then there are names like Ultimoose and The Boogeyman.
  • Aesop Amnesia: The two really have a habit of learning the lesson of working together one too many times.
  • Affectionate Gesture to the Head:
    • In "Dojo Oh No", Master Yo rubs Yin's head to comfort her while she's upset.
    • Saranoia also does this briefly in "Bad Nanny Jamma" while assuring Yin will grow up to become successful.
  • Affectionate Parody: Incredibly common along with a few Shout-Out moments; only some include:
  • All Girls Like Ponies: Or Twonicorns, as the case may be.
  • All Girls Want Bad Boys: Yin seems to fall instantly for anyone she knows, if they become tainted with evil. Even Coop the chicken. Especially Coop the chicken. It becomes very plot relevant in "Gone-a-Fowl."
  • Alphabetical Theme Naming
  • Amazing Technicolor Wildlife
  • Ambiguously Gay: Carl, The Evil Cockroach Wizard... mainly because of his accent.
    • He once used a giant robot in the shape of a giant pink stiletto-heeled stripper-boot, he's been seen being fitted for a dress by his mother (who the dress wouldn't fit, of course, as she's a dragon (don't ask), with no sign that it was unwilling, and that's just the tip of the iceberg. Carl's accent is the straightest thing ABOUT the character.
  • And Now You Must Marry Me: A non-villainous example in "For The Love of Clamboy": Yin accepts the jewel from Clamuel and agrees to be his "super special friend" when all she really wanted was the jewels; according to his tradition, she has to marry him.
  • Animation Bump: The animation seems to improve in the second season.
  • Animal Battle Aura: A Woo Foo Aura, which is in the shape of the animal that makes it.
  • Artifact of Doom: Ironically, most of the power items are in Yo's Woo Foo Armory, but the villains get their hands on it and Hilarity Ensues.
  • Artistic License – Biology: All the animal characters such as Yin and Yang, Master Yo, Yuck, Lina (a dog), and Coop would certainly have tails yet none of them do; in addition, there's also the fact some of the characters have floating ears yet can hear out of them just fine.
    Master Yo: I'm looking for a couple of children: lazy, pink and blue, ears ain't attached to their heads... no tails.
    • In "Yin Yang You", Yin, Yang, Lina, and Carl being trapped inside the real world causes them to slowly change into anatomically correct animals. To all four of them, this is ... less than good. To different degrees:
      • Yin and Yang are upset, since they have trouble controlling their "hoppy" legs and can't hold things with their paws.
      • Lina is mainly just annoyed, because "talk to the paw" is a terrible Catch Phrase.
      • Carl is grossed out over becoming a real cockroach but is too distracted by his latest scheme to pay it too much mind.
  • Art Shift: There are a few scenes which are drawn to look like a children's picture colored with crayons:
    • "Gone-A-Fowl" has the slideshow done by Yang.
    • "For The Love of Clamboy" has a demonstration of the Super Special Friends ceremony also done by Yang.
    • "Upstanding Yuck" during Yuck's flashback.
  • Bad Future: The premise of "Deja Foo", Yang creates a future where Ultimoose becomes the new Night Master when he found the Amnesulet but he managed to hit the Reset Button on it. When Yang use this as a advantage to start deliberately hurt others in attempt to get revenge, it's even worse when he forgot about the Amnesulet and got Yin and Master Yo killed by Ultimoose in the process! Yang managed to prevent the future from happening by being nice this time around and stopped Ultimoose, with the help of the other villains who Yang was nice to!
  • Badass Family
    • Badass Adorable: The cute, Technicolor rabbits Yin and Yang who look harmless at first glance but certainly have no problem beating enemies twice their size.
    • Badass Teacher: Master Yo
  • Balloon Belly: Happens to Yin in "How the Cookies Crumble" and she even has her umbilicus exposed.
    • Yang also gets one after winning an eating contest against Roger Jr. in the episode "Skirting the Issue".
  • Battle Cry: Quite a few in particular.
  • Barefoot Cartoon Animal: Quite a few characters go around without shoes, particularly the main three.
  • Be Careful What You Wish For: While the official Aesop of Mission Yin-possible is "don't jump to conclusions," this trope easily qualifies as a secondary Aesop: the Artifact of Doom du jour, the Fuzzy Pink Slippers of Heart's Desire, will grant you your heart's desire, but they will be bound to you by magic and can't be removed until you no longer want what the Slippers gave you.
  • BFS: Smoke’s sword which is nearly as large as she is.
  • Big Bad
    • The Night Master in season one until he’s defeated in “Night Fall”. Eradictus then takes his place in season two.
    • Ferocitus appears in the last episode of season two and seems as though he would have filled the slot for the past villains.
  • Blah Blah Blah
    Yang: I chop! I smash! I-
    Yin: Blah, blah, blah.
  • Boobs of Steel: Smoke
  • Book Dumb: Yang who shows a few times he’s capable of witty tricks and can get the upper hand against smarter villains when he tries; he simply shows a lack of interest in general education.
  • Brains and Brawn: Done between the twins with Yin and Yang, respectively. Although Yin is fairly well strength wise, she's much more reliant on her intelligence and magic and Yang really enjoys to hit stuff along with Obfuscating Stupidity.
  • Brick Joke: This series runs on these, but the biggest one comes from ULTIMOOSE: in "The Trouble with Twonicorns", he says he wants to pick up chicks, with his horns showing a baby chicken the last episode of the series has ULTIMOOSE honestly attracting Coop's mom.
  • Brother Chuck: After "Welcome to the Dark Tomorrow", Molecu-Lars vanished without any explanation.
  • Brother-Sister Team: The titular bunnies.
  • Butt Monkey
    • Dave who receives a fair amount of beatings and ill treatment from his friends no matter the situation; ironically, he’s one of the strongest characters due to his ability to speak to trees and use them during battle.
    • Carl and Ultimoose are often shunned and mocked by other villains due to their idiocy.
  • Catch Phrase:
    • Yang: "Hippity hoppity hard", "That's right!", "Pellets!" and "Two words. 'Who' 'Cares'?"
    • Lina: "Talk to the hand!"
    • Yuck tends to say "I'm back!" whenever he appears again. Towards the end of the episode when he thinks he's going to win he often says "Say goodbye."
  • Calling Your Attacks: "Yincinerate! Yangarang! Transfoomate!" et. al.
  • Canis Latinicus: "Roboticus Maximus" translates to Biggest/Important Robot.
  • Card-Carrying Villain: Nearly every villain in the series addresses themselves as evil but mostly "Carl, The Evil Cockroach Wizard!"
  • Chained Heat: Happens to Yang and Carl that kicks off the plot to "Get Off My Back".
  • Christmas Episode: "Seasons Beatings"
  • Chuck Cunningham Syndrome: Molecu-Lars, one of Eradicus' mooks had an unexplained disappearance after his first appearance.
  • Clown School: A fighting variation appears here as Yin and Yang spend the episode learning Clown Foo, a martial arts based on clowning around: Yo was a former practitioner and Yang excels at it. However, the techniques do not work on humorless foes (here, the accountants) resulting in the kids using their Woo Foo to defeat said accountants.
  • Comically Missing the Point: Yang has an ongoing habit of doing this in response to Yin’s panic during a bad situation.
  • Couch Gag: After the title comes a random line from the episode, often one that sounds horribly wrong out of context.
  • Covered in Mud: In "Basic Yin-Stinct", Yin struggles to decide which path of a fork in the road to take while Yang drives them on a scooter; due to failing to make a decision fast enough, the scooter runs into a tree and sends her flying into mud.
    Yin: Mud? I don't land in mud!
  • Creepy Doll: The doll Yang wins for Yin in "A Toy Story" is this, only because Zarnot is controlling it from the inside and tries to kill Yang.
  • Crystal Ball: Saranoia and Carl both have these to spy on the twins occasionally.
  • Cute Bruiser: Being pink and blue bunnies, both twins do qualify.
  • Dark Action Girl: Saranoia, Smoke, and Ella Mental.
  • Deadpan Snarker:
    • Lina, Ella Mental, and G.P.(Fr-ped), specially toward Saranoia the latter.
    • Carl can be very snarky towards his mother.
    Edna: Try not to embarrass me.
    Carl: Well, it'll be hard to compete with that gown.
  • Deflector Shields: Foo Field
  • Department of Redundancy Department: "Power doesn't make you evil. Being evil makes you evil!"
  • Disproportionate Retribution: Yuck tends to do this a lot.
    • In "Yin Yang Yuck!", he decides to walk right in the middle of a busy street, causing cars to crash into each other. When an angry driver honks at him, Yuck replies "Beep at me again. See what happens." The driver does and so Yuck decides to beat the crap out of him.
      • Also in "Yin Yang Yuck!", when Master Yo refuses to train Yuck, Yuck responds by trying to kill him.
    • In "Imperfect Fooplicates", a fooplicate claims that he doesn't want to go to the ice cream shop, the place Yuck ordered they go to. Yuck's response: throw a blast at him and yell "You'll do what l say!"
  • Does This Remind You of Anything?: Amongst many edgy jokes in “Fighting Fooberty”, Yang’s jittery, eager response to Lina is incredibly similar to a boy experiencing arousal.
  • Doomy Dooms of Doom: Carl and other villains tend to do this a lot.
  • Dragons Up the Yin Yang: No pun intended.
  • Dramatic Drop: Yo, on the occasion of realizing his students are about to let Sealed Evil in a Can out.
  • Dramatic Thunder: Used at the end of "Upstanding Yuck" when Yuck becomes evil again.
    Yuck: You wanted me to be evil again? Ha! I'm evil again! (cue lightning) And there's the lightning to prove it.
  • Dumb Muscle: Indesructo-Bob, emphasis on dumb.
  • Even Bad Men Love Their Mamas: Both Carl and Herman love Edna and try to impress her through their evil deeds.
  • Evil Counterpart: Yuck who was created accidentally by Yin and Yang's bad qualities such as Yin's obsession with control and Yang's aggression.
    • Even so, he tries to subvert this in Upstanding Yuck. He fails...
  • Evil Is Hammy
  • Evil Laugh: Most of the villains have one.
  • Evil Redhead: Smoke and Ella Mental
  • Evil Sorcerer
    • Carl The Evil Cockroach Wizard
    • The Night Master is also a sorcerer, albeit more competent.
    • Saranoia is the female variant, albeit much crazier.
  • Evil Tastes Good:
    • In "Dance Dance Devastation", Carl buys ingredients for his evil cookie: when he comes across evil butter, he licks it and says it's "evil-licious".
    • When Yin hides inside of a cheese cake in "Mission Yinpossible", she comments that it's "evilly rich".
  • Eviler Than Thou: Played for laughs between Carl and his brother Herman.
  • Excited Show Title!
  • Exposed Animal Bellybutton: Yin, Yang and Yo all have one.
  • Eye Scream: In "This Yang Isn't Brought To You By", a toy that Yang advertises called "Eye-Biters" is a pair of glasses that sprout miniature bear traps and crush the wearer's eyes.
  • Eyed Screen
  • Fantastic Slur: At times the villains will address those who use Woo Foo, particularly Yin and Yang, by the term "Woo Fools".
  • "Fantastic Voyage" Plot: "Voyage to the Center of the Yo"
  • Fattening The Victim: An old witch fattens Yin and Yang up with a big strawberry cake in the episode "A Walk in the Woods".
  • First Kiss: Yin hopes to have this in "Falling Yin Love". Yin really grows to like Brett and the two of them do kiss in the end. It's revealed to be Yuck and Yin's kiss provided him with enough power to regain his physical form.
  • Flying Broomstick: Used in "Camp Magic Pants".
  • Footsie Under the Table: Yang and Lina do this in "For The Love of Clamboy" while doing research about the life of clams. When Yang finds a startling fact, this conversation stirs up:
    Yang: Oh my gosh, Yin!
    Lina: No, it's Lina. You didn't think you were playing footsies with your sister, because that is weird.
  • Fountain of Youth: Master Yo
  • Four-Fingered Hands: used but subverted with the Manotaur who has five instead.
  • Fun with Acronyms: In an attempt to stop Yang from advertising dangerous toys, Yin decides to form an alliance against him titled Mothers Against That Jerk Yang. When trying to shorten it into an acronym, she obviously struggles to pronounce it. A woman standing by then suggests they title it "S.A.M.A.N.T.H.U.H".
  • Furry Reminder: Though not always, there are a few subtle elements of this. During "Mission Yin-Possible", Yin states that her and Yang could get over the lasers by jumping. Yang looks at her with a confused expression before bluntly reminding them that their rabbits.
    • Yang stomps his foot repeatedly during "Fighting Fooberty" which can be a sign of excitement.
    • Yin and Yang's ears can be rather expressive when frightened, alert, happy, or sad.
    • "Yin Yang You!" is practically built on this with the cartoonish aspects of Yin, Yang, Lina, and Carl becoming realistic and annoying them due to their inconvenience. In fact, this is the only episode that identifies Lina as a dog.
  • Getting Crap Past the Radar: Various.
    • Yang yelling "Pellets!" whenever he's annoyed in general.
    • The sheer amount of time they use the word "sucks" (as in "This sucks!!") is mind-boggling, especially for family friendly Disney.
    • Every single scene of "Fighting Fooberty" is sufficient to make anyone over the age of 12 slightly green in the face.
    • A scene in "Basic Yinstinct" has Yang get away with calling Yin flat chested.
    • In "Yin Yang Yuck!", Yuck comes out of the bathroom laughing about how hard it is to get "blood and car parts off your knuckles".
    • In "Camp Magic Pants", there is a giant gold statue of pants in the camp and winning a game allows you to touch it. Yang comments, "Is it alright if I touch it in the ankle area?" Yin also later says, "...Down in the ankle area so there's nothing creepy about it."
    • In "Master Dave", Yang exclaims at the beginning of the episode, "Go for the nuts, Yin. I mean the bolts too, but go for the nuts."
      • From the same episode, Carl says, "Yes, yes, honestly! I mean, I'm trying to be all evil and rampage-y here, and you keep sticking your beak in my business, which sounds a lot dirtier than it actually is..."
    • In "The Hex of the Ex" Yin is going through a montage of rejecting Coop. The final scene shows theme in a fiery area, where Yin states "It has not, as of yet frozen over.
  • Good Angel, Bad Angel: Yang has this in "Deja Foo".
    • Yuck sort of has one in "Personality Problem": the difference being is that he has a girl half and a boy half and they're both evil. Yuck shows discomfort and anger at having a female half.
  • Gosh Hornet
    • Bees attack Yang in "How the Cookie Crumbles" and "Today You are a Bear"
    • Lena gets attacked by them in "Zarnot's Girlfriend."
  • Granola Girl: Yin
  • Gratuitous Foreign Language: In "Dance Dance Devastation", Yin and Yang briefly sing in Gratuitous Spanish...then Gratuitous German.
  • Groin Attack: In 'Gone-A-Fowl', Boopy Von Ha-Ha Pants kicks Master Yo in the head multiple times, then in the crotch.
  • Gross Out Show: There’s plenty of belching, farting, and a few poop jokes here and there.
  • Gross-Up Close-Up: When Carl turns the twins ugly in "A Bad Case of the Buglies".
  • Guys Smash, Girls Shoot: The tactical difference between Yin and Yang.
  • Half-Dressed Cartoon Animal: A good portion of the characters go about in only a shirt, a belt, or some form of accessory as an outfit. There is a still amount of background or side characters who wear a full set of clothing.
  • Halloween Episode: "The Howl of The Weenie"
  • Hammer Space: All of the characters seem to have this but especially Yang who can pull out his sword at any time.
  • Harmless Villain: Varies constantly with Carl: on one hand, he’s an incredibly flamboyant cockroach wizard who still lives with his mother and feels the need to remind people that he’s evil; but, when provoked, he can do a fair amount of damage with his magic.
  • Heart Symbol: Yang leaves them behind him [where a cartoon character would ordinarily leave a puff of smoke] as a wake when he realizes his crush likes him back.
  • Heel-Face Revolving Door
    • In the episode "Upstanding Yuck", Yuck was beaten up by a group to become good and then became evil again when he got beaten up by Yin and Yang one too many only to realize that he was good all along.
    • In the episode "Crawling with the Enemy", a disguised Carl teams up with Yin and Yang to take down one of Eradicus' corporations. At the end of the episode, moved by how good Yin and Yang had treated him, he removed his disguise, says that he doesn't want to be evil anymore and be friends with them. He's kicked out.
  • Her Code Name Was Mary Sue: Yang wrote some stories when he was younger, and is mortified when Yin discovers them.
  • Hilarity Sues
  • Hoist by His Own Petard: Yang even Lampshades it.
    Yang: Our enemies usually end up defeating themselves.
  • Homeschooled Kids: Both Yin and Yang are of age to at least be in middle school but are taught by Master Yo the academic and physical aspects of Woo Foo; could be justified, given that Woo Foo is treated as a joke by the community and schools wouldn't be considered necessary to begin with.
  • Humongous Mecha: Zarnot is a living toy robot but can become large if needed.
    • In "Smorks", the Smorks create a giant Smork Bot out of multiple electronics from the dojo.
  • Hypocritical Heartwarming: Yin says (on multiple occasions) that she's the only one who gets to laugh at Yang.
  • Hypocritical Humor
  • I Am Big Boned: Master Yo.
  • I Kiss Your Hand: This is used as a sneak tactic to remove the Fooplication Charm from someone’s wrist and hide it in the mouth during “Imperfect Fooplicates”.
  • If You're So Evil, Eat This Kitten: In order to get access to the Night Master's lair and get the title, you must commit very evil acts. Yin would have become the Night Mistress if she crosses the Moral Event Horizon by killing her brother Yang.
  • Incest Subtext: Some moments between Yin and Yang invoke this trope.
    • "I don't have to listen to you, you're not hot anymore."
  • Invisibility: well, Yinvisibility and Yangvisibility.
  • Involuntary Dance:
    • In "Dance Dance Devastation", Carl puts a spell on the dance game Yin and Yang are playing that forces them to dance and sometimes sing against their will: if they don't, a monkey that keeps following them zaps the two; they later use this to their advantage and become Dance Battlers.
    • Yin and Yang beat Yuck in "Camp Magic Pants" by making the gold pants dance with disco music and disobey him.
    Yang: Silly Yuck, don't you know: everyone's pants love disco.
    • The Parachute Pants of Punishment are a pair of large golden pants that make one dance like MC Hammer. After accidentally ruining the Skirt of Ultimate Protection, Yang is forced into said pants and begins dancing embarrassingly against his will.
  • Jerkass:
    • Yang is often called one due to his immaturity and selfish nature during certain moments, but he does show he can befairly nice after learning a lesson.
    • Master Yo can act this way mainly due to being a grumpy old man and lacking patience when it comes to teachings. But much like Yang, he has a soft spot.
    • Yuck is called this constantly due to being made of negativity and receiving Yang’s often brash, violent behavior.
  • Joker Jury: Used in "Fit To Be Tried".
  • Jumping Out of a Cake: A lighthearted example, being that Yin does so in Mission Yinpossible.
  • Ki Attacks: Magic is treated as this.
  • Kid-anova: Yang
  • Kid Hero: Yin and Yang along with about every member of the Woo Foo Army; it’s never directly stated how old they are but it's implied to be around eleven to twelve years old.
  • Kneel Before Zod: In "Welcome To The Dark Tommorow", Eradicus uses the Licking Stick to force Yin, Yang, and Yo into bowing before him.
  • Lampshade Hanging: Quite a lot.
  • Large Ham
  • Last Minute Hookup: Yin and Coop
  • Last of His Kind: Master Yo is quite fond of telling anyone who will listen that he is the last panda on the planet. Before training Yin and Yang, he was also the last Woo Foo warrior.
  • Let's Get Dangerous: Carl, when he was wiping the floor with Night Master's Elite Mooks in the season one finale.
  • Loads and Loads of Characters
  • Luke, I Am Your Father: Yo is Yin and Yang's father
  • Magic Wand:
    • Saranoia makes use of these often.
    • In "Camp Magic Pants", along with Flying Broomsticks, those attending the camp are given magic wands.
  • Malicious Misnaming: Saranoia does this to Yang every time she (Saranoia) appears on the show, the nickname Mark
  • Manipulative Bastard:
    • Yuck uses Yin twice for his own gain:
      • In "Falling Yin Love" he poses as her dream boy and dates her while the whole time he is actually absorbing her Woo Foo to regain his physical form.
      • In "Camp Magic Pants" he possess the headmaster and manages to make Yin become evil so she can touch the golden pants and allow him to control it.
    • There's also Eradicus' minions that manipulate Yang into gathering up the items to revive him.
  • Medium Awareness: Prominent in Season Two.
  • Momma's Boy: Herman, oh so much.
  • Mooning: Yang does at the end of "The Yindianapolis 500" to President Muffin, despite the fact that he doesn't even wear pants.
  • Morph Weapon: Yang can change his sword into a staff, nun-chucks, a jam hammer, and fruit.
  • My Beloved Smother: It's made obvious that Herman relishes his mother's doting, but when Carl briefly gets his mother's undivided love and attention in Mission Yin-possible, he finds that being the favorite entails a lot more babying than he is comfortable with.
  • Never Say "Die": Destroy is a common replacement for the villains though “die” is often used during more serious moments.
    Master Yo: You could have been killed!
    • There's also in "Yin Yang Who?" after Yin jumps in front of a Woo Foo Aura Drain, she's aware that she'll die soon.
    Yin: That was the Aura Drain and now I'm gonna d...di...
    Yang: Dance? Oh great, and now I'm gonna yack. Bucket!
    • And in "Attack of the Vidiots" when The Lesson tries to destroy the game that Yang is inside in.
    Yin: Whoa whoa whoa! If you break the game while he's inside it, he'll totally die or something!
  • New Powers as the Plot Demands: Lampshaded in Dojo Alone after Yin and Yang finally combine their Auras.
    Yin and Yang: Fists of Yincineration! Which we suddenly know we can do!
  • No Celebrities Were Harmed: Averted - Nancy O. Delffa (and voiced by none other than Nancy O'Dell herself)
  • Non-Standard Character Design: The clams in "For The Love of Clamboy" seem to have actual photos of clams in their design.
  • Not-So-Harmless Villain: Carl in season one finale even though he was helping the good guys.
  • Obfuscating Stupidity: Yang is smarter than he pretends to be but he does this in order to be able to get away with things.
  • Obsessed Are The List Makers: In "Slumber Party of Doom", Yin creates an incredibly long list of what she feels is necessary to throw the perfect sleepover that must be performed at specific times. This causes her friends to become very annoyed.
    Yin: Some say I'm obsessive, I say I'm a well oiled fun machine!
    Lina: I say obsessive.
  • Off Model: A recurring error is giving Yang eyelashes or taking away Yin's.
    • In the opening, Yin's eyes briefly look purple instead of blue.
  • Official Couple:
    • Yang and Lina
    • Yin and Coop
  • Paper-Thin Disguise
    • Done by Carl often and Yin and Yang always seem to fall for it.
    • In "Mission Yinpossible", Yang only wears a mustache and Carl still couldn't recognize him.
    • This is averted by Yuck who disguises himself so well not even the viewerd know it's him until the ending. These "disguises" involving controlling robot suits and even body possession.
    • Averted again this time by Badfoot who wears two convincing disguises in "Old Softie".
  • Parental Abandonment: Yin and Yang's rabbit parents have not made an appearance so far, Master Yo is their only parental figure.
  • Parental Bonus
  • Parental Favoritism
    • Saranoia's Freudian Excuse is that her wizard father adored his son and paid little attention her while growing up.
    • Edna doesn't bother to hide that she prefers Herman over Carl.
  • Pin-Pulling Teeth: Yuck bites off the pin of a coconut shaped grenade and throws it at Yin and Yang in "Voyage To The Center of Yo".
  • Pink Girl, Blue Boy: Yin and Yang, respectively.
  • Pint Sized Power House: Yin, Yang, Lina, and practically every member of the Woo Foo army, composed entirely by (insanely strong) kids.
    • Makes sense, for some of them, considering:
      • Dave's parents are also treants, possibly with the same abilities.
      • Boogie Man's father also looks to be the same kind of fighter.
      • Roger Jr.'s father (and probably mother) are Punch clock villans.
      • Coop's Mother is the strongest of all... a hottie with Public Relations power.
    • Carl and Herman count as well, seeing that Carl is a powerful wizard and Herman is an ant with Super Strength.
  • Plot-Relevant Age-Up: Kraggler does this to Yin and Yang.
  • Polar Opposite Twins: Yin and Yang
  • Positive Discrimination
  • Power Glows: Woo Foo can be transferred into weapons, making them glow an often yellow color when especially powerful.
  • Power Nullifier: The Woo Foo Aura Drain is able to drain any Woo Foo powered user of their powers as well as causing them to slowly die unless they come in contact with either of their parents to save them: Yin has this done to her by Eradicus in an attempt to save her brother. She is saved by Master Yo.
  • Power Trio: Master Yo, Yin and Yang, as well as the Chung Pow Kitties.
  • Protagonist Title
  • Pungeon Master: Rubber Chucky.
  • Quirky Miniboss Squad: Eradicus' mook squad: Ella Mental, Rubber Chucky and Indestructi-Bob.
    • Molecu-Lars disappeared after their introduction.
  • Real World Episode: "Yin! Yang! You!"
  • Reformed, but Rejected: The general plot line of "Upstanding Yuck" practically revolves around this.
  • Red Sky, Take Warning: About anytime a villain appears and starts causing havoc, the sky turns red.
  • Right Behind Me
  • Rogues Gallery: Carl, Zarnot, Saranoia, Herman, Ultimoose... really, half of the cast is comprised of villains.
  • Sealed Evil in a Can: Eradicus, until Yang, in a misguided attempt to become famous, sets him free, ushering in the Dark Tomorrow.
  • Shadow Discretion Shot: Coop's first transformation into Evil!Coop has one.
  • Sibling Rivalry:
    • Yin and Yang, though they get along as often as they fight.
    • Carl and Herman's rivalry borders Cain and Abel territory.
  • Sibling Yin-Yang: Guess...
  • Sick Episode: "Woo Foo Flu" from start to finish.
  • Slapstick Knows No Gender: Though Yang receives a fair amount of slapstick, Yin and Lina tend to get hurt for the sake of laughs pretty often. The most prominent example is in “Splitting Hares” when Yin is shot off a cliff by Carl and breaks most of her bones on her way down a rocky hill.
  • Smorking: As a parody of The Smurfs, the Smorks do this constantly.
  • Split Screen
  • Stalker with a Crush: Coop constantly attempts to spy on Yin and ask her out on dates only to be shot down. Also Yang whose more subtle than Coop, but makes plenty of advances on Lina that she finds more odd than charming.
  • Stealth Pun: At an all-bear formal party, Yang asks where the bathroom is: a bear politely indicates the woods. Yang looks confused for a moment, then smacks his forehead and says, "Duh, of course."
  • Straw Feminist: Saranoia who is determined to take Yin away from her male teacher and brother because she’s convinced she’s being abused.
  • Superpowered Evil Side: Coop
  • Sword and Sorcerer: Yang’s Might and Yin’s Magic form the twins into this duo.
  • Tertiary Sexual Characteristics: Yin's eyelashes and hairearpin.
  • The End of the World as We Know It: The "Dark Tomorrow".
  • The Tooth Hurts: A prominent example in "An Inconvenient Tooth" is about Yang catching Wild Hare Tooth from his extreme lack of dental hygiene.
  • The Unfavorite
    • Saranoia's rants indicate she was one of these growing up.
    • Carl fits this trope even better than Saranoia, with his mother constantly praising his brother over him.
  • Theme Tune Rap: Done by Kyle Massey of That's So Raven and Cory in the House fame.
  • Thick-Line Animation
  • Title Drop: Yin, Yang, and Yo say it as a battle cry in the Season One finale.
  • Took a Level in Badass
    • Dave when he discovers his powers to manipulate plants.
    • Lina when she uses Might Woo Foo and was second-in-command of the Woo Foo army.
  • Took a Level in Jerkass: Later episodes of the second season have depicted the characters to be more obnoxious and rude than in past episodes, responding to each other in a very snarky manner, with the worst offenders being the twins themselves.
  • Tornado Move: The Foo-nado of course. Also the Yuck-i-cane which has a similar purpose and able to cause a fair amount of damage through high speeding winds.
  • Tsundere: Lina, she even lampshades this to Yang in Gone-A-Fowl.
  • Twin Telepathy: Yin and Yang occasionally hit the same thought at the same time and/or finish each other's sentences when they're separated and in danger.
    • Yang has used it to find Yin on occasion, though not entirely under his own control.
  • Twinkle Smile: When Yuck appears in "Upstanding Yuck", there are a few quick shots of his now clean self including one of his teeth sparkling.
  • Unusual Euphemism: "Pellets" and "hippity-hoppity hard" are pretty common phrases used by both Yin and Yang to express anger or annoyance. There's also quite a few ways of saying "Foo" such as "mother of Foo" or "what the Foo".
  • Verbal Tic
    • Coop's habit of clucking in between his words.
    • Rainbow Mane tends to say "and stuff" after his sentences.
  • Villain Team-Up: The episode "League of Evil" has Carl, Smoke, Pondscum, and The Puffin form a team along with sharing an apartment together.
  • Vomit Discretion Shot: Used as a Running Gag in "Shadowcluck".
  • Weaksauce Weakness
    • Carl is incredibly competent and dangerous when it comes to being a wizard, but enraging him makes him act like a six year old with a temper tantrum; this is shown in the season one finale, where Carl for once isn't fighting enemies who snark at him, allowing him to focus and take out hordes of opponents.
    • Herman's allergic reaction to panda fur. There is exactly one panda left, but still.
  • Witty Banter: There's a small exchange in "Personality Problem" about this.
    Yang: So, should we start with some witty banter or just bring the pain?
    Yuck: Pain is good. Especially when I'm serving it-Ha! And I'm serving it up BIG TIME!
  • Wonder Twin Powers: The Woo Foo Aura results in a giant energy form made up of Yin and Yang working together so their Battle Aura combines into a half-pink, half-blue Battle Bunny.
    • Turned up a notch when Master Yo is also involved in it, his aura is green. Not surprising when you think about it.
  • Woobie, Destroyer of Worlds
    • Yuck in "Upstanding Yuck".
    • Carl can be seen in this way. It is implied on numerous occasions that his failed attempts at being a villain efficiently and the physical abuse of his older brother, is resentment that motivates him to try to defeat Yin and Yang to impress his mother.
  • Xtreme Kool Letterz: Pondscum is spelled as "Pondscüm".
  • Yandere: Chad 3000 in "Moon Over My Yinnie" becomes incredibly possessive of Yin and tries to kill Yang multiple times.
  • You Fool!: Woo Fool seems to be a popular insult amongst the villains.

Alternative Title(s):

Yin Yang Yo
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