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I wanted everybody to stay the same, but they just didn't.

—"Gem Harvest"
Click here to see more of Andy DeMayo's quotes.

Andy DeMayo is the cousin of Greg Universe and the first cousin once removed of Steven Universe. He made his debut in "Gem Harvest". A pilot, he kept his equipment and lived at the barn until it was inhabited by Peridot, Lapis Lazuli, and Pumpkin, much to his dismay. After being convinced to accept it by Steven, he let them stay and became an ally and a friend.


He is shown wearing an olive-colored pilot's jacket and a gray undershirt along with khakis and black boots. He also wears a brown aviator hat which covers his silver hair. His wrinkled face and lighter skin differentiate him from his cousin Greg Universe, although the two share similar noses.


Andy is a traditionalist, initially shown to be stubborn, judgmental, hot-tempered and willing to hold a grudge. He is guarded and cautious in his attitude to the Gems, dismissing them as "hippies" because of their unusual appearance and lifestyle and resistant to social change and deviations from the status quo in general. As he settles down and gets accustomed to the recent changes, however, he displays a lighter side, happily talking to Steven about his life as a pilot and ultimately allowing Lapis and Peridot to stay in his barn. Towards the end of his debut, he reveals that he is bitter due to the changes in his life, primarily of the distance that grew between himself and his family and shows regret before meeting Steven.


"Gem Harvest"

Andy flies to his parents' barn and is upset to discover it has been remodeled. He is immediately met by Peridot, Lapis, and Steven. After concluding that they are homeless hippies, Andy furiously demands they vacate his property. Unsure of how to handle the situation, Steven contacts Greg, who arrives after some time with the other Crystal Gems. To the Gems' surprise, Greg introduces Andy as his cousin. Andy is similarly astonished when he discovers that Steven is Greg's son, but cheerfully greets his first cousin once removed.

Andy's mood takes a turn for the worse, however, upon learning of Greg's decision to change his surname to "Universe". He finds his cousin's association with the Gems likewise troubling, now regarding the magical beings as illegal immigrants after Greg refers to them as "aliens". He eventually restates his demand for Peridot and Lapis to leave, having established that The Barn is for the DeMayo family. Steven proceeds to persuade Andy to have a meal with the Gems, hoping that he would come to consider them as family and allow them to stay. Relations appear to initially worsen throughout preparations, though, as Andy continues to find the Gems somewhat unusual and becomes angry at their disassembly of his parents' plane. Nevertheless, Andy slowly warms up to everyone. He speaks fondly of his past experiences to Steven and Greg and is later amused by the Gems' attempt to please him with various objects related to the human celebrations of marriage, birth, and death.

Gem Harvest 250.png

When preparations are completed, the group sits down to dinner outside The Barn. As the meal progresses, Andy begins to feel out of place among the others, prompting him to abruptly cede ownership of The Barn before flying away in his plane. When Lapis and Steven catch up, Andy expresses to Steven his bitterness regarding his futile efforts to resist the changes his family experienced. Steven responds by explaining his desire to learn more about his human relatives, after which Andy comes to realize that he could have adjusted to the changes in his life and stayed in touch with the members of his family. Steven assures him that it is not too late to do so and the two fly back to The Barn where they are met by the Gems and Greg, all of whom are glad to see their return.

"Steven's Dream"

Andy helps Steven and Greg by flying them to Korea in his plane.


Andy attends Ruby and Sapphire's wedding. At the reception dance, he saw the two Arm Ships belonging to Blue and Yellow Diamond enter the atmosphere.


He is seen in the passenger seat of his plane with a Nephrite and later, Snowflake Obsidian, working as a flight instructor.


Steven Universe

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Steven was shocked to find out he had a relative he previously had no knowledge about but immediately tried his best to befriend Andy despite his dismissal of Greg and the Gems. After agreeing to have a family dinner with Greg, Steven, and the Gems and finding his prejudices being challenged, Andy left The Barn to Lapis and Peridot and took off in his airplane. When seeing this, Steven followed him in the air hanging from Lapis' arms and shouted out to him to talk him out of leaving. Steven explained that even though the Gems are his family, he needs contact with his human relatives as well, and was happy about getting a new member. Having grown attached to Steven, Andy saved him in his airplane from falling from a great height and they agreed to stay in touch with each other.

Greg Universe

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Greg is Andy's cousin who used to come to the family barn based on tradition. After Andy's debut into the modern timeline, the number of things that changed and how Greg contributed to it led to some bitterness towards each other. It would eventually be resolved at the end of the episode.

Crystal Gems

Andy's relationship with the Gems starts off poorly. Upon meeting them in "Gem Harvest", he is infuriated with Peridot and Lapis for their modifications to The Barn. He assumes them to be homeless hippies and angrily demands that they leave his property. Andy is further upset when Greg informs him that the Gems are "aliens", interpreting this as illegal immigrants. At first, the Gems reciprocate Andy's mistrust. However, wanting to maintain possession of The Barn and good relations with Steven's family, they decide to make an effort to understand and befriend him. Despite their initial wariness, Andy and the Gems gradually warm up to each other over the course of the episode. The Gems are thankful for Andy for bringing them together and he has seemingly come to accept the Gems as family, allowing them to stay at The Barn.

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Andy appears in the Steven Universe Future episode "Guidance" where he's shown to assist in helping various Gems adjust to life on Earth, namely a Nephrite and the Crystal Gem Snowflake Obsidian. This heavily contrasts with his first appearance, as instead of resenting the Gems, he seems to actively partake in helping them and seems happy with having the Crystal Gems pilot his beloved plane.

Episode Appearances


  • The name "DeMayo" is a spelling variation of "Di Maio", a surname found in Sicily and southern Italy.
  • The name "DeMayo" is also found among Sephardic Jewish families from Spain and Portugal.
  • Andy's personality and conservative political views are based on common right-wing stereotypes.
    • His mannerisms are also very similar to the character Carl from the show Aqua Teen Hunger Force who is voiced by the same voice actor. The most notable difference is Carl being a lot more foul-mouthed and nasty due to the adult nature of ATHF, as well as dressing more slovenly.
  • Andy's surname, DeMayo, is similar to Nick DeMayo's, an animation director for "Gem Harvest" as well as the series in general.
  • Andy asks Steven to refer to him as "Uncle Andy" despite them being first cousins once removed. In certain cultures, referring to a distant relative as an aunt or uncle is seen as a sign of respect, while in others, it is a sign of affection.


Click to view the gallery for
Andy DeMayo.

Click to view the designs for
Andy DeMayo.

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)

Other: 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 Monster
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 • "Famethyst" • The Great Diamond Authority • Homeworld Gems • Off Colors • Pebbles • Sadie Killer and the SuspectsSecret Team • Steven and the Stevens • Water ClonesZoomansSpecies
Gem Types Aquamarines • BismuthsDiamonds • GarnetsJades • Lapis Lazulis • Nephrites • Pearls • Pebbles • Peridots • Quartzes • Rubies • Sapphires • Topazes