"Monster Bash" is the forty-eighth episode of Star vs. the Forces of Evil. It premiered on November 16, 2017, and is the thirteenth episode in the third season.


All the youth of Mewni gather at the ancient Monster Temple to celebrate a new era of Monsters and Mewmans living together in peace, until guests start disappearing!


Star and Marco are refurbishing the temple for a party they are throwing for Mewman and Monster youths. While Star is nervous, she is happy to see them all get together so easily over similar interests. Nevertheless, she continues to fret over various things, becoming somewhat absent minded when Tom attempts to get intimate with her. Outside, Miss Heinous, Gemini and a fully reformed Rastacore wait patiently to strike. Inside, Tom tries to get Star to loosen up about current events. When Marco tries to explain that she is trying to focus her efforts on fixing Mewman/Monster relations, Tom becomes visibly disinterested and frustrated.

Meanwhile, Princess Spiderbite is approached by Slime Monster. While at first indifferent to him, she suddenly find him attractive when he reveals that his slime, which he compares to aloe vera, can immediately cure her giant spider bite. As they go deep into the temple together, they are attacked by something. Spiderbite returns, but everyone misinterprets the situation with the Mewmans accusing Slime of attacking her and the Monsters accusing the Mewmans of taking Slime and other monsters away. Star recruits Marco to go look for them, leaving Tom once again frustrated. The two go deep into the temple and find a hidden campsite that belongs to Mina Loveberry.

Mina reveals that she has been kidnapping the monsters as it is her sworn duty, but when Star tells her that she has been trying to repair the relationship between Monsters and Mewmans, she grows frustrated and prepares to attack. However, Miss Heinous and her minions arrive and prepare to drain Marco of his vitality, when her cheeks light up, revealing a secret nursery. Miss Heinous suddenly remembers that she is in fact Meteora Butterfly, daughter of Eclipsa, which Mina corroborates. Mina tries to attack her, but Star intervenes as she wants answers. Tom later arrives to help fight her off as Heinous is rescued by Gemini and Rastacore.

Mina attempts to look for Heinous, but Star stops her. The knights of Mewni and Rhombulus arrive, forcing Mina to retreat. As everyone is tended to outside, Rhombulus scolds Star for being careless, but refuses to discuss the significance of the temple. Tom admits that he did not realize how important the party was to Star, but will begin to respect her decisions. Star is further upset when the knights begin processing the Monsters, but not the Mewmans and demands they be let go. Meanwhile, Miss Heinous, who is starting to show monster traits, accepts that she is Meteora Butterfly.



  • This episode marks the third season's mid-season finale.
  • This is the sixth half hour-long episode in the series, following "St. Olga's Reform School for Wayward Princesses", "Storm the Castle", "Bon Bon the Birthday Clown", "Face the Music", and "Starcrushed".
  • Miss Heinous is revealed to be Meteora Butterfly, the Mewman/monster hybrid daughter of Queen Eclipsa and her monster husband.
  • The Monster Temple is revealed to be the original home of Meteora and her parents.
  • The episode's title is similar to, and a reference to, the 1962 novelty song "Monster Mash".
  • One of the books at Mina's campsite is called Secret Tuxedo, a reference to Tuxedo Mask from the anime series Sailor Moon while another is called Thirty Shades of Magic; a reference to the novel Fifty Shades of Gray.


Concept Art


External links

v - e - d
StarVTFOE Logo
Star vs. the Forces of EvilStar and Marco's Guide to Mastering Every DimensionComic Books
Star ButterflyMarco DiazPony HeadLudoRiver ButterflyMoon ButterflyGlossaryckFerguson O'durgusonAlfonzo DolittleJackie-Lynn ThomasJanna OrdoniaBrittney WongMr. and Mrs. DiazOskar GreasonMiss SkullnickTom LucitorLaser PuppiesJeremy BirnbaumBuff FrogBuff Frog's TadpolesMonster ArmPrincipal SkeevesPrincess SmooshyToffeeMeteora ButterflyMina LoveberryEclipsa ButterflyHekapooOmnitraxus PrimeRhombulusLekmetKellyLove SentenceMariposa Diaz
Season One: "Star Comes to Earth/Party With a Pony" • "Match Maker/School Spirit" • "Monster Arm/The Other Exchange Student" • "Cheer Up Star/Quest Buy" • "Diaz Family Vacation/Brittney's Party" • "Mewberty/Pixtopia" • "Lobster Claws/Sleep Spells" • "Blood Moon Ball/Fortune Cookies" • "Freeze Day/Royal Pain" • "St. Olga's Reform School for Wayward Princesses" • "Mewnipendance Day/The Banagic Incident" • "Interdimensional Field Trip/Marco Grows a Beard" • "Storm the Castle"

Season Two: "My New Wand!/Ludo in the Wild" • "Mr. Candle Cares/Red Belt" • "Star on Wheels/Fetch" • "Star vs. Echo Creek/Wand to Wand" • "Starstruck/Camping Trip" • "Starsitting/On the Job" • "Goblin Dogs/By the Book" • "Game of Flags/Girls' Day Out" • "Sleepover/Gift of the Card" • "Friendenemies/Is Mystery" • "Hungry Larry/Spider With a Top Hat" • "Into the Wand/Pizza Thing" • "Page Turner/Naysaya" • "Bon Bon the Birthday Clown" • "Raid the Cave/Trickstar" • "Baby/Running with Scissors" • "Mathmagic/The Bounce Lounge" • "Crystal Clear/The Hard Way" • "Heinous/All Belts are Off" • "Collateral Damage/Just Friends" • "Face the Music" • "Starcrushed"
Season Three: "The Battle for Mewni" • "Scent of a Hoodie/Rest in Pudding" • "Club Snubbed/Stranger Danger" • "Demoncism/Sophomore Slump" • "Lint Catcher/Trial by Squire" • "Princess Turdina/Starfari" • "Sweet Dreams/Lava Lake Beach" • "Death Peck/Ponymonium" • "Night Life/Deep Dive" • "Monster Bash" • "Stump Day/Holiday Spellcial" • "The Bogbeast of Boggabah/Total Eclipsa the Moon" • "Butterfly Trap/Ludo, Where Art Thou?" • "Is Another Mystery/Marco Jr." • "Skooled!/Booth Buddies" • "Bam Ui Pati!/Tough Love" • "Divide" • "Conquer"
Season Four: "Butterfly Follies" • "Escape from the Pie Folk" • "Moon Remembers/Swim Suit" • "Ransomgram/Lake House Fever" • "Yada Yada Berries/Down by the River" • "The Ponyhead Show!/Surviving the Spiderbites" • "Out of Business/Kelly's World" • "Curse of the Blood Moon" • "Princess Quasar Caterpillar and the Magic Bell/Ghost of Butterfly Castle" • "Cornball!/Meteora's Lesson" • "The Knight Shift/Queen-Napped" • "Junkin' Janna/A Spell with No Name" • "A Boy and His DC-700XE/The Monster and the Queen" • "Cornonation" • "Doop-Doop/Britta's Tacos" • "Beach Day/Gone Baby Gone" • "Sad Teen Hotline/Jannanigans" • "Mama Star/Ready, Aim, Fire" • "The Right Way/Here to Help" • "Pizza Party/The Tavern at the End of the Multiverse" • "Cleaved"

Royal Magic WandDimensional ScissorsMagic Instruction BookStar's Notebook of Spells
I'm from Another Dimension Closing ThemeShining StarSpace UnicornAwesome FeelingToo Little Too LateWaiting for MeJust FriendsThe Ballad of Star Butterfly
MewniEcho CreekEcho Creek AcademySt. Olga's Reform School for Wayward PrincessesDiaz House
See Also
Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+