Teen Titans Go! Wiki
Teen Titans Go! Wiki

"Quantum Fun" is the tenth episode in the fifth season of Teen Titans Go!, and the two-hundred-nineteenth overall episode of the series.


Robin takes the other Titans on a trip through the dizzying world of quantum physics.


It's a sad, rainy day outside in Jump City, and Robin's in a similarly depressing mood. Not bothering to get dressed, he merely wears his bath robe wit a defeated look on his face. The other Titans, noticing that Robin's looking out his temporary sadness curtain again, wonder what's got him down. He explains his worries about their lives not being real—that it's all just a computer simulation. Raven slaps him in anger for bringing this nonsense up again, and the other berate him for watching The Matrix again. After Starfire brutally roasts Robin about not wondering metaphysics, Robin points out the fact that reality has strange paradoxes. The imbeciles mishear him as saying "pair of box" and "pair of docs", so he has to explain a paradox: a self-contradicting idea that turns out to be true. Surprisingly, Beast Boy understands his explanation, then burns him with the example of him smelling like fish, but never eating it. Offended by this insulting yet true example, Robin changes the subject to the science of reality, but the Titans aren't in the mood for boring stuff. However, Robin's intent on crushing their souls with metaphysical depression as well...

Beast Boy has been taking Super Male Vitality supplemements...

Robin begins his lecture on quantum physics, but he's instantly interrupted by Cyborg, who mistakes this for the show Quantum Leap. To his disappointment, Robin corrects him, saying they'll actually be studying the movement of atomic/subatomic particles (tiny things). He can't catch a break, though, as Raven jokes that they're studying tiny things, i.e. Robin's height. After a brief meltdown, he starts to define superposition. When the Titans misinterpret him and begin superhero-posing, Robin tries to get them back on track with the Copenhagen definition of superposition. Once again though, the Titans completely digress, this time obsessing over visiting the fishy city of Copenhagen, Denmark. Exasperated beyond belief, Robin shuts down their delusional ideas and finally gets to the definition of superposition: matter being in all possible states until measured. The Titans are amazed—not by superposition, but by the incredible levels of his boringness. At his point, Robin literally explodes in fury.

A little while later, Raven, Beast Boy, Cyborg, and Starfire are chilling out on the couch when lights suddenly dim and sparkly flames start going off. Apparently, Robin's trying to make his lecture about the nature of reality little more exciting. However, when his fanfare leads to a cardboard box, the Titans aren't so impressed. He explains that it's for a thought experiment called Schrödinger's cat. Hearing the name Schrödinger, the Titans get off track talking about the similarly named Peanuts cartoon character. After begging them to stay focused, he asks Beast Boy to turn into a cat and then get into the box. The shapeshifter is willing to go cat-mode, but highly protests being put into the box. Robin has to repeatedly thrust Beast Boy to get him to penetrate the container's hole.

Cyborg doesn't really like how this experiment is going, but Robin continues with it anyways... he explains that lethal acid trap lies within the box, and until they check on the box, they won't know Beast Boy's fate. However, while he's talking, Raven and Starfire point out Beast Boy's ghost rising from the box. Robin orders them to focus on the lesson in superposition, not Beast Boy's dead body. But Raven, being a good teammate, calls over a pair of docs to revive Beast Boy. When Robin complains about his superpositions, the Titans once again strike super poses, causing him to combust in rage again...

Now nighttime, the Titans are taking it easy when the couch suddenly rises to the roof—another Robin lecture... This time, Robin's got a huge stage set up, and he flies in via jetpack. All that coolness is wasted, though when he reveals a table with absolutely nothing... or so the Titans think. Using a microscope, the four Titans zoom in on a super-small electron. The atomic particle starts spitting dope bars about the experiment, a physics demonstration showing that light can be seen as both waves and particles, as well as the probabilistic nature of quantum mechanics.

Although the subject matter is a little dull, the rap somehow inspires interest in subatomic existence. Robin starts congratulating himself for a job well done, but he suddenly notices an identical group of Teen Titans standing right next to them. Raven notices another five Titans nearby, and Starfire wonders just what the heck is going on. Skilled in science, Robin realizes that these must be their superpositions. The roof starts to overflow with endless teams of Titans, making the original team a little nervous. However, Raven actually retained some info from Schrödinger's cat experiment: they can fix an object (their true team) in one state simply by observing/measuring.

On Robin's command, the Titans get to work battling the impostor possibilities simply by staring at them. The phony teams slowly start disappearing, but they use measuring devices to make the vast amount go away even faster. To finish off the remaining stragglers, they go binocular-machine gun-mode on them until only one team remains. However, before they can get to the alternate reality group, they themselves get measured, and disappear as a result... Now the only ones left, the different-possibility team breathes a sigh of relief. They're very lucky to have understood quantum mechanics and all that science-y stuff. The new Cyborg is a little depressed that their just one sample in an infinite number of outcomes, but the Titans manage to laugh off their insecurity about the terrifying universe they live in...

Unexpectedly, the camera zooms out, revealing the Titans to merely be on a computer screen in a cartoon studio. A crew member of Teen Titans Go! (who appears to be Ken McIntyre) then gives the audience a jolly thumbs up.


Pats for Robin.

Major Characters

Minor Characters



  • Apparently, the original Teen Titans disappear at the end of this episode. However, Teen Titans Go! does not follow a strict continuity, so upcoming episodes will probably feature the primary versions.
  • This is the first time Beast Boy has died in one of his animal forms.


  • Beast Boy once again dies in this episode, but is later revived (to see a list of his past death experiences throughout the series, click here).
    • This is the first time he appears as a ghost in his animal form. His ghost cat form resembles his ghost form in "Scary Figure Dance".

      Beast Boy is a Ghooooooost…again

  • Raven is seen unhooded for the 80th time.
  • The scene when the other Titans (except Robin) taking the superposition too literally, they're doing the "serious mode" poses from "Let's Get Serious".



  • TBA

Running Gags

  • Robin getting roasted by the Titans.
  • Cyborg and the others calling Robin crazy.
  • The Titans interrupting Robin's lessons.
  • Robin trying to teach get the Titans interested in Quantum physics and each time doing so the experience becoming more and more grand.


The transcript for "Quantum Fun" can be found here.


Click here to view more images from Quantum Fun.
The image gallery for Quantum Fun may be viewed here.

v - e - d Episode Guide

Season 1: April 23, 2013 - June 5, 2014
Legendary SandwichPie BrosDriver's EdDog HandDouble TroubleThe DateDude RelaxLaundry DayGhostboyLa Larva de AmorHey Pizza!GorillaGirl's Night OutYou're Fired!Super RobinTower PowerParasiteStarliarMeatball PartyStaff MeetingTerra-izedArtful DodgersBurger vs. BurritoMatchedColors of RavenThe Left LegBooksLazy SundayStarfire the TerriblePower MovesStaring at the FutureNo PowerSidekickCaged TigerSecond ChristmasNose MouthLegsBreakfast CheeseWafflesBe MineOppositesBirdsBrain FoodIn and OutLittle BuddiesMissingUncle JokesMás y MenosDreamsGrandma VoiceReal MagicPuppets, Whaaaaat?

Season 2: June 12, 2014 - July 30, 2015
Mr ButtMan PersonPiratesMoney GrandmaI See YouBrianNatureSalty CodgersKnowledgeSlumber PartyLove MonstersBaby HandsCaramel ApplesSandwich ThiefFriendshipVegetablesThe MaskSerious BusinessHalloweenBoys vs GirlsBody AdventureRoad TripThanksgivingThe Best RobinMouth HoleHot GarbageRobin BackwardsCrazy DaySmile BonesReal Boy AdventuresHose WaterLet's Get SeriousTamaranian VacationRocks and WaterMultiple Trick PonyTruth, Justice and What?Two Bumble Bees and a WaspOil DrumsVideo Game ReferencesCool SchoolKicking a Ball and Pretending to Be HurtHead FruitYearbook MadnessBeast ManOperation Tin ManNeanCampfire StoriesAnd the Award for Sound Design Goes to RobThe HIVE FiveThe Return of SladeMore of the SameSome of Their Parts

Season 3: July 31, 2015 - October 13, 2016
Cat's FancyLeg DayDignity of TeethCroissantSpice GameI'm the SauceHey You, Don't Forget about Me in Your MemoryAccept the Next Proposition You HearThe Fourth Wall40%, 40%, 20%Grube's FairytalesA FarceScary Figure DanceAnimals, It's Just a Word!BBBDAY!Black FridayTwo ParterThe True Meaning of ChristmasSquash & StretchGarage SaleSecret GardenThe Cruel Giggling GhoulHow 'Bout Some EffortPyramid SchemeBeast Boy's St. Patrick's Day Luck, and It's BadThe Teen Titans Go Easter Holiday ClassicBatman v Teen Titans: Dark InjusticeBottle EpisodeFinally a LessonArms Race with LegsObinrayWally TRad Dudes with Bad TudesOperation Dude RescueHistory LessonThe Art of NinjutsuThink About Your FutureTTG v PPGCoconut Cream PiePure ProteinOpen Door PolicyCrazy Desire IslandThe Titans ShowBooty ScootyWho's Laughing NowOregon TrailSnuggle TimeOh Yeah!Riding the DragonThe OverbiteThe Cape

Season 4: October 20, 2016 - June 25, 2018
Shrimps and Prime RibHalloween v ChristmasBooby Trap HouseFish WaterTV KnightTeen Titans Save ChristmasBBSFBDAY!The StreakThe Inner Beauty of a CactusMovie NightBBRAEPermanent RecordTitan Saving TimeThe Gold StandardMaster DetectiveEaster CreepsHand ZombieEmployee of the Month: ReduxThe AvogodoOranginsJinxedBrain PercentagesBL4Z3Hot Salad WaterI Saw You DanceThe Story in Your EyesPlaying Hard to GetThe Night Begins to ShineLicationLabor DayClassic TitansOnes and ZeroesCareer DayTV Knight 2Justice League's Next Top Talent Idol StarThe AcademyCostume ContestThrone of BonesDemon PromThanksgettingThe Self-Indulgent 200th Episode Spectacular!BBCYFSHIPBDAYBeast GirlFlashbackBro-PocalypseMo' Money Mo' ProblemsTV Knight 3

Season 5: June 25, 2018 - April 4, 2020
The Scoop!Chicken in the CradleKaboomsTower RenovationMy Name is JoseThe Power of ShrimpsMonster SquadReal OranginsQuantum FunThe FightThe GrooverJustice League's Next Top Talent Idol Star: Second Greatest Team EditionHow's This for a Special? SpaaaaceBBRBDAYSlapping Butts and Celebrating for No ReasonNostalgia is Not a Substitute for an Actual StoryBusiness Ethics Wink WinkGenie PresidentTall Titan TalesI Used to Be a PeoplesThe Metric System vs FreedomThe ChaffThem Soviet BoysLittle ElvisBooty EggsTV Knight 4Lil' DimplesDon't Be an IcarusStockton, CA!What's Opera TitansForest PiratesThe BergeracSnot and TearsCampfire!What We Learned at CampCommunicate OpenlyRoyal JellyStrength of a Grown ManHad to Be ThereGirls Night InThe Great DisasterThe Viewers Decide

Season 6: October 4, 2019 - May 1, 2021
Butt AtomsTV Knight 5Witches BrewThat's What's Up!Crab ShenanigansBrobotsBrain FlipBeast Boy on a ShelfChristmas CrusadersWe're Off to Get AwardsBat ScoutsWalk AwayRecord BookMagic ManTitans Go CasualRain on Your Wedding DayEgg HuntJustice League's Next Top Talent Idol Star: Justice League EditionMission to Find the Lost StemsDrumsGuitarBassYou're The OneWhere Exactly on the Globe is Carl Sanpedro? - Part 1Where Exactly on the Globe is Carl Sanpedro? - Part 2Where Exactly on the Globe is Carl Sanpedro? - Part 3Where Exactly on the Globe is Carl Sanpedro? - Part 4Ghost With the MostBucket ListTV Knight 6KryptoniteThumb WarToddler Titans…Yay!Baby MouthThe CastSuperhero FeudLucky StarsVarious Modes of TransportationCool UnclesButter WallBBRAEBDAYDon't Press PlayReal ArtJust a Little Patience...Yeah...YeahVillains in a Van Getting GelatoI Am ChairBumgorfThe MugHafo SafoZimdings

Season 7: January 8, 2021-present
Justice League's Next Top Talent Idol Star: Dance Crew EditionFeed MePig in a PokeP.P.A Little Help PleaseMarv Wolfman and George PérezSpace House - Part 1Space House - Part 2Space House - Part 3Space House - Part 4Cy and BeastyT is for TitansCreative GeniusesManor and MannerismsTrans Oceanic Magical CruisePolly Ethylene and Tara PhthalateEEbowsBatman's Birthday GiftWhat a Boy WondersDoomsday PreppersFat CatsJamDCPepo the PumpkinmanBreakfastCaptain CoolA Doom Patrol ThanksgivingGlunkakakakahControl FreakA Holiday StoryThe DripStandards & PracticesBelly MathFree PerkGo!

Top of the Titans: April 27, 2018 - July 20, 2018
Raddest SongsBest Love SongsBeast Boy & Cyborg SongsDance PartyBest Rivals