Foolduke is a royal court jester of the Butterfly Kingdom of Mewni and, as of "Booth Buddies", Ruberiot's wife. She first appears in "Marco and the King".


Foolduke is a young female Mewman with brown skin, blonde hair, and brown eyes. She wears a light blue long sleeve shirt with three light purple diamonds on the front, blue pants and pointy shoes, and a blue jester's hat with golden bells on the ends.


Foolduke first appears in "Marco and the King" after several straight days of partying with King Butterfly at Butterfly Castle. After waking from being unconscious, she asks the king where her pet monkey is, unaware that he tossed it out the window a few moments earlier.

In "King Ludo", after Ludo has taken over the castle, Foolduke, Ruberiot, and Mime Girl go into hiding and use his royal amenities whenever he's not around. When Ludo returns to the royal bedchambers, Foolduke and her fellow performance artists sing a song to distract him while Marco Diaz tries to steal Ludo's dungeon key. Mid-performance, Ruberiot and Foolduke begin to argue, and Foolduke manages to steal the key in the process. When Ludo banishes King Butterfly from the kingdom, Foolduke and her friends form a resistance movement with Marco to overthrow Ludo's reign.

In "Toffee", the Resistance's tactics mostly involve ruining Ludo's credibility. After they are captured by Ludo's monsters, Marco is rescued by Queen Butterfly and Buff Frog, and he leaves his fellow freedom fighters behind, much to their sadness.

In "Scent of a Hoodie", Foolduke and her fellow performance artists bid Marco farewell as he prepares to depart for Earth, with Foolduke asking him if he can stay a little longer.

In "Booth Buddies", she gets married to Ruberiot.


Season 3


S3E4 Foolduke 'where's my monkey?'
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  • Foolduke is voiced by Natalie Palamides, who is best known for providing the voice of Buttercup in the 2016 reboot of The Powerpuff Girls.
ved Star vs. the Forces of Evil Characters
Main characters
Star ButterflyMarco DiazLudo
Characters from Earth
Diaz family:
Angie DiazLinda 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

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Characters from Mewni
Butterfly family:
Eclipsa ButterflyGlossaryckKing ButterflyLady WhositsLil ChaunceyManfredManticoreQueen ButterflySir LavaboSir Scarsguard

Pony Head family:
King Pony HeadPony Head

BrianMr. CandleTom Lucitor

Buff Frog's tadpolesDennisDogbullFlower monstersFooldukeGlobgorHiggsHydraJohansen familyMewmansMillhorseMime GirlMina LoveberryPrincess SpiderbiteRich PigeonRuberiotWarnicorns

Characters from other dimensions
Magic High Commission:
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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 FotinoFather TimeHeliosHungry LarryJorbyKellyNachosNaysayaPreston Change-ORoySeahorseSeanSquaresTadTalon RaventalonWilloughby

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