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.
  • . 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.


New Gallery

Click to view the gallery for Tongue Monster.


ve Corrupted Gems

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

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

Unfused Gems: AmethystBiggs JasperBismuthLapis LazuliLarimarPearlPeridotRubySapphireSnowflake Obsidian
Gem Fusions: 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: Angel Aura QuartzBig Bird • Biggs Jasper • BixbiteBlue Lace Agate • Cherry Quartz • Desert GlassEarth BeetleFlower MonsterGem Cave CreatureHeaven BeetleInvisible Gem Monster • Jasper • Lace Amethyst • Larimar • Lighthouse Gem Monster • Nephrite • Ocean JasperOrange SpodumenePlant MonsterPyramid Temple GemThe Slinker • Snowflake Obsidian • Tongue MonsterUnknown Giant Gem MonsterWater BearWatermelon TourmalineZebra Jasper (singular)Others

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)

Gem 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 Bird

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

Other: Baby MelonBlue CrabCactus 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 DebGrandfatherParents) • 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

Other: Blue CrabsButt 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 MonsterVine Monsters
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 Cool Kids • Crystal GemsCrystal Temps • "Famethyst" • Great Diamond Authority • Homeworld Gems • Hospital EmployeesOff ColorsOnion's FriendsPebblesSadie Killer and the SuspectsSecret Team • Steven and the Stevens • Water ClonesZoomansMinor Human CharactersMinor Animal CharactersMinor Fictional CharactersMinor Gem CharactersMinor Corrupted GemsSpeciesUnknown Gems
Gem Types Aquamarines • BismuthsDiamonds • GarnetsJades • Lapis Lazulis • Nephrites • Pearls • PebblesPeridots • Quartzes • Rubies • Sapphires • Topazes

Start a Discussion Discussions about Tongue Monster

Community content is available under CC-BY-SA unless otherwise noted.