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The Tongue Monster (dubbed as, "The Dirty Tongue Flapper" by Peridot) is a corrupted Gem that first appeared in "Kindergarten Kid". Throughout the episode she was chased down by Steven and Peridot, finally being poofed and bubbled by Peridot.


The Tongue Monster is a bipedal, vaguely avian creature with two long dark green legs which lead into an orb-shaped body covered in shaggy teal fur. On either side of her head are a set of three small eyes with pale green sclera and lime-green irises. She has a large mouth with fang-like teeth and a set of three dark green tongues she often undulates when vocalizing. Her gem is located on the center of her nose and appears to be iridescent, refracting various shades of gray, blue-green and brown on each facet.


"Kindergarten Kid"

The Tongue Monster was the main antagonistic force in the episode. She was left in the Beta Kindergarten after Jasper had been corrupted and poofed as a remnant of her army which was being rounded up by the Crystal Gems. When Pearl, Garnet, and Amethyst were incapable of capturing her, Peridot and Steven went out to hunt her down. Peridot attempted to outsmart her with her various "Peri-plans"; however, despite her and Steven's best efforts, the Tongue Monster managed to cause each of their plans to backfire. Steven then suggested that Peridot should think like the Tongue Monster. Eventually, Peridot and the Tongue Monster fell off a cliff, which Peridot survived due to her innate durability, while the Tongue Monster was poofed by the force of the fall. Peridot then bubbled her gem which end up being sent to the Barn instead of the Burning Room as Peridot considers the barn to be her home.

According to Joe Johnston, the Crystal Gems later moved the Tongue Monster's gem to the Burning Room.[1]


  • Enhanced Speed: She can run at extremely high speeds, making her immensely difficult to capture, even when trying to grab onto her such as when Amethyst latched onto her using her whip.
  • Enhanced Strength: She's capable of towing Gems like Amethyst and Peridot behind her while still running at maximum speed, and was easily able to lunge onto Steven and attack him using her talons.
  • Intelligence: She was capable of outsmarting Peridot and Steven's plans, and then inadvertently caused Peridot to get crushed by a massive boulder through her curiosity.

Episode Appearances


  • The Tongue Monster's squared gemstone bears a striking resemblance to that of a Zircon.
  • She resembles the small figurine Steven had in his room which he showed to Holo-Pearl in the episode "Steven the Sword Fighter", which in turn parodied Sonic the Hedgehog, who is also known for his remarkable speed.
  • She, the Cluster and the bubbled Cluster Gems in Yellow Diamond's room are the only known bubbled Gems not in the Burning Room.
    • However, in the episode "Change Your Mind", she presumably got released from the bubble and uncorrupted, alongside the other corrupted Gems.
  • She parodies a well-known Looney Tunes character, the Road Runner, who was known for his antics alongside Wile E. Coyote.
    • Like the Road Runner, she has avian-like characteristics, high speed, and also makes gurgling sounds.
    • Her concept uncorrupted form parodies the popular video game character Sonic the Hedgehog.
  • She was the first and only gem Peridot has bubbled in the series.


Image Description
The Tongue Monster's gemstone is located at her nose. It is square and angular, having multiple asymmetrical facets and being in an array of dull colors.


Click to view the gallery for Tongue Monster.


ve Corrupted Gems

CentiNAV.png Wormmonster gemnav.png Obelisk gemstoneNAV.png Desertglas gemstoneNAV.png Gemcavecreature gemstoneNAV.png Big Bird Nav icon.png Heavenbeetle gemstoneNAV.png Earhbeetle gemstoneNAV.png WTorm Navbox Stereo.png Icemonster gemNAV.png Invisiblegemmonster gemstoneNAV.png Lighthouse MonsterNAV.png Waterbear gemstoneNAV.png SlinkersGemNav.png Crabmonster gemstoneNAV.png Corrupted Biggs Jasper Nav ico.png Snow Monster Nav icon.png FusionTemplateJasperMonster.png Corrupted Jasper Nav.png UCGNav.png Flowergemnav.png Historical Friction monster template picture.png

ve Characters in Steven Universe
Crystal Gems Human-Gem Hybrids: Steven Universe

Unfused Gems: AmethystBiggs JasperBismuthLapis LazuliLarimarPearlPeridotRubySapphireSnowflake Obsidian
Fusion Gems: AlexandriteCrazy Lace AgateGarnetMega PearlObsidian (Rose Quartz Fusion)OpalRainbow QuartzSardonyxSugilite
Hybrid Fusions: Obsidian (Steven fusion)Rainbow Quartz 2.0Smoky QuartzStegStevonnieSunstone
Inactive Gems: Rose Quartz
Humans: Connie Maheswaran
Pets: LionPumpkinCat Steven

Homeworld Gems Unfused Gems: CombyEmeraldPebblesPeridotsSapphiresSpinel

Fusion Gems: MalachiteTopazZebra Jasper (fusion)Giant RubyRuby (triple fusion)Lemon JadeBluebird Azurite
Inactive Gems: Pink Diamond

Off Colors Unfused Gems: PadparadschaRutile Twins

Fusion Gems: FluoriteRhodonite
Humans: Lars Barriga

Other Gems (Formerly) Corrupted Gems: AlbiteAngel Aura QuartzBig Bird • Biggs Jasper • BixbiteBlue ChalcedonyBlue Lace Agate • Cherry Quartz • ChrysocollaDesert GlassEarth BeetleGrossular DiopsideHeaven Beetle • Jasper • Lace Amethyst • Larimar • Moonstone • Nephrite • Ocean JasperOrange Spodumene • Snowflake Obsidian • Tongue MonsterUnknown Giant Gem MonsterWater BearWatermelon TourmalineWhite TopazZebra Jasper (singular)Minor Corrupted Gems

Other Gems: Minor GemsUnknown Gems (Morganite • Nephrite-XJ Cut-763 • Unknown Quartz Warrior • Blue Diamond's Court • Pink Diamond's EntourageUnknown Crystal Gems67 Elite CitrinesPyritesHessonites, Demantoids, and PyropesKyanites)

Forced Fusions: Cluster Gems (The Cluster)

Comic Gems: Ant Gem MonsterClock Tower GemFrozen FragmentGlass GhostInvisible Manta RayMole Gem MonsterMolluskMonster Lizard GemObeliskOld Book GemPlant MonsterPerils of PweepweeRainbow Cloud MonsterRed Bird Gem MonsterRed Eel MonsterScorching ShardSlime Gem MonsterSlug MonsterSnowbeastTentacle MonsterUnknown Giant BirdVine Monsters

Other Major Characters Humans: Greg UniverseSadie Miller
Recurring Characters Humans: Andy DeMayoBarbara MillerBill DeweyBuck DeweyBuddy BuddwickDante and Martha BarrigaDoug MaheswaranPriyanka MaheswaranHarold SmileyJamieJaneJenny PizzaKevinKiki PizzaKofi PizzaMartyMr. FrymanMystery GirlNanefua PizzaOnionPeedee FrymanQuentin FrowneyRonaldo FrymanShepSour CreamSuitcase SamVidaliaYellowtailZoomans (F-3Jay-TenU-12Wy-Six)

Others: Baby MelonBlue CrabsCactus StevenHolo-PearlMagic MossSteven Jr.Watermelon Stevens

Minor Characters Humans: The Best Diner in the World's WaitressEmpire City Wildlife Rehabilitation Center EmployeeGaryGreg's family (Aunt and Uncle • Aunt DebGrandfatherParentsGreat-aunt Gregargia) • Hospital Employees (Dr. GeroDr. StrombergDr. West) JeffKhajima, Jaime, and BrandishMarty's RoadiesMayoral BodyguardsMike KrolOnion's Friends (Garbanzo • Pinto • Soup • Squash) • Patricia and DanielRickySabinaSteven's BabysitterSunshine JusticeWilliam Buford BuchananWilliam DeweyMinor Human Characters

Animals: Butt LobsterCrystal BasiliskDogMask Island FishOnion's MouseOnion's SnakeParty GuyRaccoonSeagullsSnakeSteven The ThirdSusanMinor Animal Characters
Aliens: Beetle AliensBird Blob AliensUngulate AliensWorm AliensFlower-Like AliensMinor Alien Characters

Fictional Characters Cookie CatDogcopterMearlPizza JennyMinor Fictional Characters

Camp Pining Hearts: PaulettePercyPierre
"Garnet's Universe": FoxmanHopperHoppyRingo
Golf Quest Mini: AceAce's Father
Li'l Butler: Li'l ButlerMr. MoneyMrs. MoneyDaughter Money • Dirtbike Money
Lonely Blade: Evil JanitorLonely BladeLonely Blade's Brother
Rose's Room: Cloud ConnieTiny Floating Whale
The Spirit Morph Saga: ArchimicarusLisaPlinkmanWind Lizard

Antagonists CentipeetlesCrab MonstersCrystal ShrimpDrill ParasitesElectric SkullsFryboRed EyeRobot Shooty ThingSmoke MonsterWater Clones
Alter Egos Billy Bank AssetsChunk TruckConcrete HeatDashing Danny DooberHandsome Hank HackleschmidtHowl JonesLoch Ness BloggsterPurple PumaSea WaspShark-O-ManiaTiger Millionaire
Attack the Light Blue LightGreen LightIndigo LightOrange LightRed LightViolet LightWhite LightYellow Light

Groups: Light ArmyBlue Monsters • Green Monsters • Indigo MonstersOrange MonstersRed Monsters

Save the Light Hessonite • SquaridotHessonite's Citrines
Unleash the Light DemantoidPyrope
The Phantom Fable Fable • Lonely PearlJasper (Eyeball)
Groups The Cool Kids • Crystal Gems • Crystal Temps • The "Famethyst" • The Great Diamond Authority • Homeworld Gems • Off ColorsSadie Killer and the SuspectsSecret Team • Steven and the Stevens • Zoomans • Species
Gem Types Aquamarines • Bismuths • Diamonds • GarnetsJades • Lapis Lazulis • Nephrites • Pearls • Pebbles • Peridots • Quartzes • Rubies • Sapphires • Topazes • Zircons