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The Pulmonate Gastropod (Mollusk) is a Gem Monster that appears in Steven Universe: Too Cool for School as the main antagonist. She is seen destroying the school.

Appearance

The Mollusk is a very slimy giant green slug without any eyes. Her size varies, as she is ever growing, a trait that causes her to seek a new shell constantly. Her first shell was indigo with bits of a pillar stuck in it and her second shell was constructed of school supplies.

History

Steven Universe: Too Cool for School

She is first seen being hunted at night by Steven and the Crystal Gems. While Steven is walking, the ground suddenly moves underneath him, and it is revealed to be the Mollusk, whose shell was made out of the pillar pieces Steven had stepped on. The Crystal Gems quickly poof her, and Steven grabs a piece of her shell to bring to class for Show and Tell.

When it is time for Show and Tell, Steven realizes that the Mollusk's shell is missing along with various school supplies. Following a green trail of slime and supplies, the Mollusk is soon found in the gymnasium. Connie leads her classmates in a fight against it with dodgeballs being thrown at her weak spot, the shell.

Eventually, when the Mollusk breaks through the walls into the cafeteria, high sodium lunch is thrown at her causing her to shrink due to her slug characteristics. Although she is now small and slippery, the Crystal Gems arrive in time to poof her, but at the expense of the school which subsequently collapses from battle damage.

Abilities

  • Snail/Slug Physiology: The Mollusk has similar appearance, capabilities, and vulnerabilities found in snails and/or slugs.
    • Shell Formation: The Mollusk is capable of forming a hardened shell used for defensive purposes from debris and materials around her. Ironically, what she uses as her defense also doubles as her weak spot.
      • Projectile Launching: The Mollusk can launch projectiles from the materials acquired to make up her shell, such as pencils and chairs.
    • Slime Mimicry: The Mollusk's body is primarily composed of slime and is able to slip away from attacks easily due to the amorphic nature of slime.
      • Slime Generation: As her body is primarily made of slime, the Mollusk is also capable of leaving behind slime and is often used as defense, usually causing her enemies slip on her slime.
  • Constant Growth: The Mollusk is constantly growing, something that requires her to seek a new shell often. When bigger, she is harder to defeat and, while smaller, she is harder to hit.

Trivia

  • The Mollusk's biggest weakness is salt, as it was used to shrink her and make her easier to poof.
ve Comic Gems

Cobelisk Gem revision Cloud Gemstone Sea Monster Gemstone Catterpillar Gemstone Book Gemstone SnowBeastGem Plant Gemstone Clock Gemstone GBGem Game Gemstone Glass Ghost Gemstone

ve Characters in Steven Universe
Crystal Gems Half: Steven

Unfused: AmethystBismuthPearlPeridotRose QuartzRubySapphire
Gem Fusions: AlexandriteCluster GemsGarnetOpalRainbow QuartzSardonyxSugiliteUnknown Fusion Gem
Hybrid Fusions: Smoky QuartzStevonnie
Inactive: Bismuth • Rose Quartz • "Biggs""Crazy Lace""Snowflake"

Homeworld Gems Unfused: AquamarineDiamonds (Blue DiamondYellow DiamondPink Diamond) • Pearls (Blue PearlYellow Pearl) • Quartz (Holly Blue Agate • The "Famethyst"Carnelian"Skinny" JasperOthers) • Rubies (ArmyDocEyeballLeggyNavy • Others) • TopazesZircons (DefenseProsecuting)

Fusions: MalachiteTopazCorrupted Jasper Fusion
Inactive: Centipeetle Mother • JasperPink DiamondZircon (Defense)Zircon (Prosecuting)

Other Gems Corrupted: Ant Gem MonsterBig BirdCentipeetle MotherClock Tower GemCrab Gem MonsterDesert GlassEarth BeetleGem Cave CreatureGlass GhostHeaven BeetleIce MonsterInvisible Gem MonsterInvisible Manta RayJasperLighthouse Gem MonsterMolluskObeliskOld Book GemOrange Great North MonsterPyramid Temple GemPerils of PweepweePlant MonsterRainbow Cloud MonsterRed Bird Gem MonsterSlime Gem MonsterSlinkerSlug MonsterSnowbeastSnow MonsterTongue MonsterWater BearWatermelon TourmalineWorm MonsterUnknown Giant BirdUnknown Giant Gem Monster

Other Gems: The ClusterFluoriteLapis LazuliPadparadschaRhodoniteRutile TwinsMinor GemsMinor Corrupted GemsUnknown Gems (Morganite • Nephrite • Blue Diamond's Court • Unknown Quartz Warrior)

Major Characters Human: Connie MaheswaranGreg UniverseLars BarrigaSadie Miller

Other: Lion

Recurring Characters Humans: Andy DeMayoBarbara MillerBill DeweyBuck DeweyBuddy BuddwickDoug MaheswaranDr. Priyanka MaheswaranHarold SmileyJamieJaneJenny PizzaKevinKiki PizzaKofi PizzaMartyMr. FrymanMystery GirlNanefua PizzaOnionOnion's FriendsPeedee FrymanRonaldo FrymanSour CreamQuentin FrowneySuitcase SamVidaliaYellowtailZoomans

Other: Baby MelonBlue CrabHolo-PearlMagic MossPumpkinSteven Jr.Watermelon Stevens

Minor Characters Humans: The Best Diner in the World's WaitressDante BarrigaEmpire City Wildlife Rehabilitation Center EmployeeGaryGreg's family (Aunt and Uncle • Aunt DebGrandfather) • Hospital Employees (Dr. GeroDr. StrombergDr. West) JeffMarty's RoadiesMayor Dewey's BodyguardsMartha BarrigaMike KrolOnion's Friends (Garbanzo • Pinto • Soup • Squash) • RickyWilliam Buford BuchananWilliam DeweyMinor Human Characters

Other: Blue CrabsButt LobsterDogMask Island FishOnion's MouseOnion's SnakeRaccoonSeagullsSteven The ThirdSusanMinor Animal 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 Blade
Rose's Room: Cloud ConnieTiny Floating Whale
The Spirit Morph Saga: ArchimicarusLisaPlinkmanWind Lizard

Antagonists CentipeetlesCrab MonstersCrystal BasiliskCrystal 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

Groups Cool Kids • Crystal GemsCrystal Temps • Great Diamond Authority • Homeworld Gems • Hospital EmployeesOff ColorsOnion's FriendsSecret Team • Steven and the Stevens • Water ClonesZoomansMinor Human CharactersMinor Animal CharactersMinor Fictional CharactersMinor Gem CharactersMinor Corrupted GemsUnknown Gems