This article is about the fusion of five Homeworld Rubies. You may be looking for another Ruby.

Yeah! We won't let you trick us again!

—"Back to the Moon"

Ruby, also known as Giant Ruby in the credits of "Back to the Moon", is the fusion of "Doc", "Eyeball", "Navy", "Army", and "Leggy". She made her debut in the episode "Hit the Diamond".


As her components' forms and gemstones are the same (excluding the gemstone that is located where her left pupil would be instead of where her entire left eye would be), she remains identical, except for being larger in size and having a slight outfit variation (including Doc's yellow visor). Her gemstones are located on her chest, where her left pupil would be, navel, left shoulder, and left thigh.


In, "Hit the Diamond", she threateningly asks for the location of Jasper in a firm and interrogative tone, which matches Doc, Eyeball, and Army's personalities. However, once given an answer, her voice became higher and happier (a complete mood swing), which matches Navy and Leggy's personalities. In "Back to the Moon", she tells Garnet, Amethyst, and Pearl that they "can't trick them again." After Steven opens the airlock, Giant Ruby holds onto the doorframe to keep from being swept out, telling Steven that he "can't get rid of them that easy."

She does not identify as her own being, saying "tell us where Jasper is now," "we won't let you trick us again," and "you can't get rid of us that easy."


"Hit the Diamond"

After learning they have been tricked, the Rubies fuse to form Giant Ruby. Peridot then runs out of the barn and attempts to surrender herself in exchange for the safety of her friends. Giant Ruby, much to Peridot's surprise, asks where Jasper is. Peridot is unable to answer so Steven covers for her and tells Giant Ruby that Jasper is on the planet Neptune. Giant Ruby, seemingly appeased, unfuses.

"Back to the Moon"

After the Rubies realize they have been tricked again, Doc orders them to assemble and they fuse into Giant Ruby to fight the Crystal Gems. Steven opens the airlock and the vacuum of space sucks Giant Ruby halfway out the door. Giant Ruby tells Steven that he "can't get rid of them that easy." They both turn and watch as Sardonyx forms. She smashes her hammer into Giant Ruby, forcing her to unfuse, separating the Rubies as they are sucked out into space.

Episode Appearances


Crystal Gems

In "Hit the Diamond", after the Crystal Gems trick her components into playing a game of baseball to stall their chances of finding Jasper, she is formed and is extremely angry. She is formed again in "Back to the Moon", determined to get revenge on the Crystal Gems for tricking her components again.


In "Hit the Diamond", she asks where Jasper is, as the reason why her components were sent to Earth was to retrieve her. Jasper most likely leaves a good impression on her, like her components.


  • Most of her components made their debut in "Hit the Diamond", with Eyeball being the only one who debuted in "Barn Mates".
  • The ruby is closely associated with aspects such as vitality, life, passion, and fire, all of which can be symbolically linked to the color red.


Image Description
Giant Ruby's five gemstones are located on her chest (Doc), where her left pupil would be (Eyeball), navel (Navy), left shoulder (Army), and left thigh (Leggy), corresponding with her components' gemstone locations (excluding the gemstone that is located where her left pupil would be instead of where her entire left eye would be). Her red gemstones each have a square aspect, a symmetrical front and back, and a light pink ring around them, usually hidden inside her body. The gemstones are decahedrons, specifically truncated tetragonal dipyramids.





ve Fusion Gems
Crystal Gem Fusions

Full-Gem Fusions
FusionTemplateGarnet3 FusionTemplateOpalMovie FusionTemplateSugilite FusionTemplateSardonyx
FusionTemplateAlexandriteFusionTemplateRainbowQuartz Newobsideon NavboxCrazyLaceFixed

Hybrid Fusions

FusionTemplateStevonnie FusionTemplateSmokyQuartz Rainbow Quartz 2.0 Gem Nav Sunstone Thumbnail fixed FusionTemplateObsidianS Steg Nav

Homeworld Gem Fusions

FusionTemplateMalachite Ruby quintuple fusion gem FusionTemplateJasperMonster
FusionTemplateTopaz JadeFusionNavbox BluebirdAzuriteNavbox

Crystal Gem/Homeworld Gem Fusions


Unaligned Gem Fusions

RhodLink FluoriteLink1

Forced Fusions

FusionTemplateCluster Cluster Navbox

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
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