Star vs. the Forces of Evil Wiki

Seahorse is a seahorse and Reflectacorp Mobile employee who first appears in "Demoncism". He is one of Pony Head's several ex-boyfriends.


As his name suggests, Seahorse is a seahorse. He has purple scales, darker purple-tipped fins, a curly tail, dark-blue mohawk-like spines, freckles, and black eyes. After his demoncism, he also wears glasses. As an employee at Reflectacorp Mobile, he wears a yellow shirt with a nametag.


Prior to his demoncism, Seahorse was a very aggressive, destructive, and bitter musician who played heavy metal. After his demoncism, he is turned into a well-mannered, upstanding (albeit robotic) contributor to society.


Seahorse (pre-demoncism).

Seahorse first appears in the season 3 episode "Demoncism" as an employee at Reflectacorp Mobile, selling compact mirror phones to customers. Having undergone a demoncism to rid him of all his negative behavior, Star Butterfly and Pony Head ask him where Tom Lucitor's demoncism is being held. However, his drastic personality change make him a hindrance to Star and Pony Head's goals. When his behavior deeply upsets Pony Head, he manages to break through his personality changes enough to give her and Star a map to the site of Tom's demoncism.

In "Bam Ui Pati!", Seahorse helps Pony Head escape from Star and the Pony Head sisters so that she can watch her favorite Korean soap opera. He thwarts their pursuers by throwing boxes at them, distracting them with 3-D printed busts of Pony Head, and driving into an electrical storm. At the end of the episode, he gives Pony Head a new, artificial horn to replace the one she lost to Meteora Butterfly. Pony Head thanks him, but once again breaks up with him.

In "The Ponyhead Show!", Seahorse hacks the compact phones of everyone on Mewni in order to broadcast Pony Head's self-named talk show. In "Queen-Napped", he helps Pony Head and her sisters pull off an elaborate queen-abduction hoax in order to boost Eclipsa Butterfly's popularity.

In "The Monster and the Queen", it is revealed that Seahorse went to jail for taking part in Eclipsa's abduction. In "Doop-Doop", he is released from prison on probation/house arrest.

In "The Right Way", Seahorse helps Pony Head and her friends protect Monster Castle from an invading Solarian Warrior, mostly serving as cameraman for "The Ponyhead Show!" He is later seen in "The Tavern at the End of the Multiverse", along with those wounded by the Warrior. He is briefly seen in "Cleaved", keeping vigil by the recovered Pony Head's bedside.


Pony Head

Seahorse and Pony Head.

Pony Head is Seahorse's on-again/off-again girlfriend. Before he was demoncized, he wrote a song dedicated to Pony Head, and Pony Head considered him a romantic. After his demoncism, Pony Head hated his new personality and broke up with him. Since the events of "Demoncism", however, Seahorse has apparently made an effort to break through his personality change and make Pony Head happy again, despite how often they break up and get back together. In "The Monster and the Queen", Star mentions Pony Head has become interested in him again after he was imprisoned for Eclipsa's abduction.


Season 3

Season 4


Click here to view the image gallery for Seahorse.
Click here to view the gallery.

ved Star vs. the Forces of Evil Characters
Main characters
Star ButterflyMarco DiazLudo Avarius
Characters from Earth
Diaz family:
Angie DiazLinda DiazMariposa DiazRafael Diaz

Echo Creek Academy:
Alfonzo DolittleAndreaAwesome OpossumsBeckyBlake LemonsBrittney WongChantalChelsea McNelseyEdFerguson O'durgusonFrancis SmithingtonHope HadleyIngrid BloomgrenJackie Lynn ThomasJanna OrdoniaJustin ArmbergLars VanderdudLeahMegan GandlymMiss SkullnickMoobs SquitsonOskar GreasonPrincipal SkeevesRaya RouseySabrina BackintoshStarFan13TimmyZeke

Amy VendrosianBon BonBrigidCharlie BoothJeremy BirnbaumLove SentenceLydiaMackie HandMarisolMrs. LiaoSensei BrantleyWarriors

Characters from Mewni
Butterfly family:
Celena ButterflyComet ButterflyCrescenta ButterflyDirhhennia ButterflyEclipsa ButterflyEstrella ButterflyFestivia ButterflyJushtin ButterflyKing ButterflyQueen ButterflyRhina ButterflySkywynne ButterflySolaria Butterfly

FooldukeGlossaryckLady WhositsLil ChaunceyLion dragonManfredMime GirlMina LoveberryRuberiotSir LavaboSir Scarsguard

Avarius family:
Dennis Avarius

Pony Head family:
King Pony HeadPony Head

BrianDave LucitorMr. CandleTom LucitorWrathmelior Lucitor

Forest of Unlikely Spider Bites:
King ShastacanPrincess Spiderbite

Ludo's army:
Bald eagleBeard DeerBearicornBig ChickenBoo FlyBuff FrogEmmittGiant spiderLobster ClawsMan ArmSpikeballsThree-eyed Potato BabyToffeeUnnamed bat monsterUnnamed crocodile monsterUnnamed flower monsterUnnamed frill-neck monsterUnnamed giraffe monsterUnnamed goat monsterUnnamed lizard monsterUnnamed mushroom monsterUnnamed two-headed monsterUnnamed warthog monster

Buff Frog's tadpolesDogbullFlower monstersGlobgorHiggsHydraJohansen familyMewmansMillhorsePie KingRich PigeonSlime MonsterWarnicorns

Characters from other dimensions
Magic High Commission:
HekapooLekmetOmnitraxus PrimeReynaldo the Bald PateRhombulus

St. Olga's Reform School for Wayward Princesses:
GeminiGuardsMiss HeinousPrincess ArmsPrincess SmooshyRasticoreSt. OlgaSt. Olga's princesses

Quest Buy:
Cobalt FerreroQuest Buy sloth clerksRiddle Sphinx

Pixie clerkPixie EmpressPixie taskmasterPixies

Ben FotinoBrunzettaDragon-cycleFather TimeHeliosHungry LarryJorbyKellyNachosNaysayaPreston Change-OQuirky GuyRoySeahorseSeanSquaresTadTalon RaventalonWilloughby

Star Butterfly's creations
Butterfly monsterCloudyDoop-DoopGiant magical squirrelsLaser puppiesMonster ArmSpider With a Top HatThree-eyed firecats