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The Pulmonate Gastropods (Mollusks) are Gem Monsters that appear in Steven Universe: Too Cool for School as the main antagonists. They are seen destroying the school.

Appearance

The Mollusks are very slimy giant green slugs without any eyes. Their size varies, as they are ever growing, a trait that causes them to seek a new shell constantly. The first shell was indigo with bits of a pillar stuck in it and the second shell was constructed of school supplies. The first mollusk also had an appendage attached to a claw-like rock, but it never got the chance to use it.

History

Steven Universe: Too Cool for School

The first mollusk was 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 another shell from the rubble to bring to class for Show and Tell.

When it is time for Show and Tell, Steven realizes that the small shell is missing along with various school supplies. Following a green trail of slime and supplies, another 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.

Gemstones

Image Description
Molluskgem1
The first gem was located in the small castle on the shell.
Image Description
Molluskgem2
The second gem is in the small purple shell.

Trivia

  • The Mollusk's biggest weakness is salt, as it was used to shrink her and make her easier to poof.
    • This is similar to real life snails and slugs.
ve Comic Gems
Adventure Time: 2013 Spoooktacular #01

Cobelisk Gem revision

Steven Universe (2014-2015)

CloudGemNAV MantaNAV SlugNAV OldBookNavJ23 SnowBeastNAV PlantGemNAV ClockNAV

Steven Universe (2017-2018)

RedBirdNAV RedEelGemNav ComicLizardGemNav Molegemnav

Steven Universe and the Crystal Gems

GlassNAV Antgemnav

One-Shots

GBNAV GameGemNAV SlimeNAV

Steven Universe: Too Cool for School

Mollusknav

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

Homeworld Gems Unfused: AquamarineEmerald • Topazes (left and right)

Fusions: MalachiteTopazCorrupted Jasper FusionGiant RubyRuby (triple fusion)
Inactive: JasperPink DiamondZircon (Defense)Zircon (Prosecuting)

Off Colors Unfused: PadparadschaRutile Twins

Fusions: FluoriteRhodonite
Humans: Lars Barriga

Other Gems Corrupted: Big BirdCentipeetle MotherCrab Gem MonsterDesert GlassEarth BeetleFlower MonsterGem Cave CreatureHeaven BeetleIce MonsterInvisible Gem MonsterJasperLighthouse Gem MonsterOrange Great North MonsterPyramid Temple GemPlant MonsterSlinkerSnow MonsterTongue MonsterWater BearWatermelon TourmalineWorm MonsterUnknown Giant Gem Monster

Other Gems: The ClusterLapis LazuliMinor GemsMinor Corrupted GemsUnknown Gems (Morganite • Nephrite • Nephrite-XJ Cut-763 • Unknown Quartz Warrior • Blue Diamond's Court • Pink Diamond's EntourageUnknown Crystal Gems67 Elite Citrines)

Comics Gems: Ant Gem MonsterClock Tower GemGlass GhostInvisible Manta RayMole Gem MonsterMolluskMonster Lizard GemObeliskOld Book GemPlant MonsterPerils of PweepweeRainbow Cloud MonsterRed Bird Gem MonsterRed Eel MonsterSlime Gem MonsterSlug MonsterSnowbeastTentacle MonsterUnknown Giant Bird

Major Characters Human: Connie MaheswaranGreg UniverseSadie Miller

Other: Lion

Recurring Characters Humans: Andy DeMayoBarbara MillerBill DeweyBuck DeweyBuddy BuddwickDante and Martha BarrigaDoug MaheswaranDr. Priyanka MaheswaranHarold SmileyJamieJaneJenny PizzaKevinKiki PizzaKofi PizzaMartyMr. FrymanMystery GirlNanefua PizzaOnionPeedee FrymanRonaldo FrymanSour CreamQuentin FrowneySuitcase SamVidaliaYellowtailZoomans

Other: Baby MelonCat StevenBlue CrabHolo-PearlMagic MossPumpkinSteven 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 DebGrandfather) • Hospital Employees (Dr. GeroDr. StrombergDr. West) JeffMarty's RoadiesMayor Dewey's BodyguardsMike KrolOnion's Friends (Garbanzo • Pinto • Soup • Squash) • RickySabinaSteven'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 AliensUngulate 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 • SquaridotCitrine
Groups Cool Kids • Crystal GemsCrystal Temps • "Famethyst" • Great Diamond Authority • Homeworld Gems • Hospital EmployeesOff ColorsOnion's FriendsSadie Killer and the SuspectsSecret Team • Steven and the Stevens • Water ClonesZoomansMinor Human CharactersMinor Animal CharactersMinor Fictional CharactersMinor Gem CharactersMinor Corrupted GemsSpeciesUnknown Gems