Star vs. the Forces of Evil Wiki

Slime Monster, or simply Slime, is a teenage Slime Man-type monster of Mewni who first appears in "Monster Bash".


Slime, as his name suggests, is a humanoid monster with a body comprised entirely of green slime. He has green eyes (one of which is typically obscured by a hair-like patch of slime) and long arms, and he typically appears wearing a purple wool hat, dark blue jeans that are torn at the knees, and brown boots.


In "Monster Bash", he is shown to be helpful and kind, willing to heal Penelope's spider bites in spite of her disgusted comments aimed at him earlier.

Slime appears to be quite laid-back and doesn't care if his slime stains or dirties objects, as seen in "Butterfly Follies".


Slime first appears in "Monster Bash" attending Star Butterfly's party at the Monster Temple to unite Mewmans and monsters. He approaches Princess Penelope Spiderbite and tries to ask her for a dance, but she is initially disgusted by him. After he uses his slime to heal her spider bite, however, they become friends.

When the two accidentally stumble into a secret temple chamber, Mina Loveberry attacks them and captures Slime, and Penelope gets blamed by the other monsters for Slime's disappearance. Slime is later rescued with the other monsters in the end when Star, Marco, and Tom chase Mina off.

In "Butterfly Follies", after the battle against Meteora Butterfly results in the destruction of Butterfly Castle, Slime takes up residence in the Mewman/monster village of New Monstertown, and he briefly appears receiving freshly washed linens from Sir Lavabo.

In "Moon Remembers", Slime appears offering hay to Star when she arrives to the village with her mother Moon and sitting at the dinner table among Mewmans and other monsters.

In "Surviving the Spiderbites", Slime is revealed to be in a romantic relationship with Princess Spiderbite after the events of "Monster Bash", and the two communicate often via text message.

In "Cornonation", Slime attends Eclipsa Butterfly's queen coronation ceremony with Penelope and her parents.

In "Here to Help", Slime briefly appears visiting his parents with Penelope in Monstertown before Mina attacks with her army of Solarian Warriors. In "The Tavern at the End of the Multiverse", Slime is among the many monsters that Mina and her warriors prepare to shove off a cliff.


Princess Spiderbite

Slime and Princess Spiderbite kissing.

When Slime first meets Penelope, she is initially wary of him and disgusted by his slimy body. After he heals her spider bite, however, she calls him amazing, and the two become fast friends. As of "Surviving the Spiderbites", Slime and Penelope are boyfriend and girlfriend, and Slime also has a good relationship with Penelope's parents.

Powers and abilities

  • Slime physiology: As a Slime Man, Slime's body is made up of slime. He appears to have no bones or vertebrae, and he can recover easily from splattering on the ground.
  • Healing properties: According to Slime himself, the slime that makes up his body has the same properties as aloe vera, and it can cure a variety of bug bites within seconds.


Season 3

Season 4


Click here to view the image gallery for Slime Monster.
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

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Characters from Mewni
Butterfly family:
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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:
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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:
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Quest Buy:
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Star Butterfly's creations
Butterfly monsterCloudyDoop-DoopGiant magical squirrelsLaser puppiesMonster ArmSpider With a Top HatThree-eyed firecats