Nightmare Simon

"Shoot. Did I just copy Finn and Jake?"
This character is from another universe. They are living or lived in a different timeline somewhere in the multiverse.

Nightmare Simon is an alternative version of Simon Petrikov, dreamed by Fionna and Cake during "Casper & Nova".

Appearance[]

Nightmare Simon is a strange, contorted version of Simon, found frozen in ice in Fionna and Cake's dreamt magical version of their world. He reflects Fionna's anxieties over how bringing back the Ice King will affect Simon.

Gallery[]

See Also[]

v • d • e Other characters

Recurring	Abracadaniel • Ancient Psychic Tandem War Elephant • Ancient Sleeping Magi of Life Giving • Banana Guards (Female Banana Guards) • Banana Guy • Banana Man • Betty Grof • Big Destiny • Billy • Bob & Ethel Rainicorn • Boy Bear • Bronwyn • Bryce • Candy Corn Grandma • Candy Heart • Candy Kids • Carroll • Castle Staff • Charlie • Chet • Chicle/Crunchy • Chocoberry • Chocolate Bar Guy • Choose Goose • Cinnamon Bun • Clarence • CMOs • Cow • Cuber • Dancing Bug • Destiny Gang (Trami, Tromo, & Others) • DMO • Don John the Flame Lord • Donny • Dr. Donut • Dr. Ice Cream • Elise • Farmer's Market people • Farmworld Finn/Ice Finn • Farmworld Jake • Flambo • Flame Guards • Flame King • Football • Frog Carrying Crown • Gibbon • Gingerbread Cookie • Gingerbread Muto • Gnomes • Grape Popsicle Guy • Grass Finn/Fern/The Green Knight • Grassy Wizard • Gumbald/Punch Bowl • Gumball Guardians • Gumdrop Lass 1 • Gumdrop Lass 2 • Gunther • Hot Dog Knights • Huntress Wizard • Iceclops • Ice Cream Guy • Ice Cream Lady • Jake 2 • Jake Jr. • Jelly Bean People • Jermaine • Joshua • Kenneth • Kim Kil Whan • King of Ooo • King Worm • Kitten • Lemon Camel • Lemongrabs 1, 2, & 3 • Lolly/Manfried • Lollipop Girl • Lumpy Space King & Queen • Magic Man/Normal Man/King Man • Maja • Marc • Margaret • Marshmallow Kids • Me-Mow • Minerva Campbell • Moe • The Morrow • Mother Gum • Mr. Cream Puff • Mr. Cupcake • Mr. Fox • Mr. Pig • Mrs. Cow • Naked Wizard • Neptr • Nurse Pound Cake • Ogre • Party Bugs • Party Pat • Patience St. Pim • Peppermint Butler • Phil • Pineapple Guy • Prize Ball Guardian • Pup Gang • Rattleballs • Ricardio • Ron James • Root Beer Guy/Dirt Beer Guy • Schwabl • Science Cat • Secret Society (Bufo, Forest Wizard, & Laser Wizard) • Shelby • Snail • Snow Golem • Spirits • Squirrel (The Duke) • Starchy • Sugar Cube • Susan Strong • Swan • Sweet P • Taffy Girl • T.V. • The Ice Cream • Tiffany Oiler • Tiny Manticore • Tom • Toronto • Townspeople • Tree Trunks • Two Headed Ducks • Uncle Chewy • Viola • Wafer Guy • Warren Ampersand • Water Nymphs • Wyatt

Animated short	Fire Elemental • Ninjas • Old Man

Season 1	Amoeba • Animals • Bagel • Balloons • Baskets & Boots Owner • Bat • Battle Cubes • Bee • Bellamy Bug • Big Guy • Bird inside out • Bottled Ghoul • Brad • Brain Beast • Bucket Knight • Bugbears • Business Men • Cactus Creatures • Cherubs • Coal Man • Cobbler • Crossbow Guy • Cyclops • Crystal Guardians • David • Demon Cat • Dennis • Dimple Plant Monster • Dolphin • Doug • Duchess of Nuts • Duke of Nuts • Eberhardt • Eberhardt's wife • Evil Guy • Evil Ocean • Fairy • Fear Feaster • Fine Lady • Fire Count • Fire Newt • Flaming Eyeballs • Frog • Gary the Mermaid Queen • George • Giant Bear • Giant Goldfish • Giant House Guy • Giant Monster Mouth • Giant Turtle • Goblin King • Goblin Thieves • Guardian Angel • Hag • Hatchlings • Heart Beast • Horse Wearing Shower Cap • Ice Cube Creature • Ice-o-pede • Invisible People • Jake's Subconscious • Jelly Cube • Jeremy • Jerry • The Jiggler • Key-per • King of Thieves • Lake Knights • Larry (My Two Favorite People) • Laser Pointer Troll • Limousine Driver • Lisby the Cashew Butler • Lyre Player • Mama Jiggler • Mannish Man • Marauders • Marquis of Nuts • Meat Man • Melissa • Mike A. • Mike H. • Mimic Monster • Mini Queen • Mountain 2 • Mountain Man • Mr. Turtle • Mushroom Creatures • Nut Castle Guard • Nut Creatures • Oculus of Rehabilitation • Old Lady • Old Man Henchman • Old Man Prisoner • Old Soft Person • Old Swans • Old Wizards • Party Jellyfish • Peach Orchard Farmer • Peanut Baby • Penguin With Flower • Penny • Peter • Pixies • Reaper • Rock • Rock Wall Thief • Shadow Horse • Sharon/The Gut Grinder • Short Goblin • Sign Zombies • Skeleton Army • Skeleton Baby • Skeleton Butterflies • Skeleton Mom • Sleeping Student • Snow Monsters • Snowball • Snowman Priest • Spiky Mayor • Squid Bartender • Stanley • Stanley's family • Stonesy • Super Freak (Gorflax, Gork, Kim, Trudy, Wee Wee, & Zap) • Swamp Giant • Sword Shark • Three Wise Men • Toad • Two Headed Monster • Two Headed Thief • Video Game Frog • Video Game Girl • Wall of Flesh • Witch • Wizard Students • Wizard Thief

Season 2	Ants • Aquandrius • Bandito • Beaver • Boobafina • Booboo • Bouncy Bee • Boyfriend & Girlfriend Skeletons • Butterfly With Laser Gun • Celina • Colonel Candy Corn • Commander and Private • Crystalline Demon • Cubby • Dead Goblin • Dr. Dextrose • Gate Guardian • Georgy • Gelatin Man • Ghost Man • Gnome Knight • Gnome Minions • Gnome Ruler • Golem • Grimby • Green Gumdrop Dude • Gummy • Halt • Hawks • Hunny Bunny • Inuits • JJ • Knights • Labyrinth Worm • Large Bear • Lester • Mandroid • Maria • Momma Bear • Monster • Mr. Goose • Mrs. Yoder • Mushroom Guy • Mushroom Mayor • Nietzsche's Übermensch • Piglets • Pink Milkshake • Pupil Worm • Red Faced Female Monster • Rock Nurse • Royal Tart Path Guards • Science Guys • Sheriff • Simon • Sir Slicer • Skeletal Guards • Sleepy Sam • Slicer's Horse • Slug Lady • Snail Ladies • Snorlock • Soul Sucked Fuzzy Friend • Sugar Bears • Taddle • Talking Skull • Tart Toter • Teenage Bear • Tiny Red Creature • Tree Witch • Vanilla Curse Wizard • Wendy • Werewolf Queen • Whisper Dan • Wormy McSquirmy • Xergiok • Zeldron Spirits

Season 3	Ash • Blastronaut • Bliblob • Boilbee • Booger • Brain Wiz • Burger Monster • Candy Corn Thug • Candy Tavern People (Candy Tavern Bartender, Cookie Guy, etc.) • Centipede • Cherry Blossom Ghost • Clown Nurses (Head Clown Nurse, Big Clown Nurse, etc.) • Crocodile with Party Hat • Cute King • Cyclo • Dimension Wizard • Door Lord • Dr. J • Dumb Rock • Electric Eel • Evil Monster • Fight King • Finn and Jake's extended family • Fire Wolf Pup • Flame Jester • Flame Minstrel • Forest Cyclops • Fruit Witches • Gentleman Wizard • Ghost Announcer • Gladiator Ghosts • Grand Master Wizard • Gumdrop Dad • Gumdrop teenager • Ham Sandwich • Hamburger Monster • Hand Snow Golem • Hedgehog Creatures • Hot Dog Monster • Howard • Iron Owls • Jam Jam • Jaybird • Jelly Kinders • Lady Wizard 1 • Lady Wizard 2 • Lava Man • Lemon Camel • Lollipop Thug • Lost Tinker Goblin of Fog Mountain • Lumpy Space Messenger • Mildwin • Muscular Ghosts • Pan • Paper Pete • Rainy • Rock Wizard • Science • Scorcher • Skunk • Slush Beast • Smudge • Spherical robots • Spider • Spirit Waves • Stag • Talking Bush • Talking Rose • That Guy in Xmas Sweater • The Other Guy in Xmas Sweater • Tiny Goblin • Tonya • Trap Bridge • Tree Stump With Sign • Two Headed Cutie • Ugly Monster • Warrior Princess' and Clarence's armies • Weapon Head • Wildberry Guards • Wormo • Yellow Butterflies

Season 4	Antelope • Baby Spider • Bear • Beautiful Lady • Barb • Blindfold Guy • Booko • Bug • Candy Baby • Candy Mother • Candy Nanny • Catapult Guy • Chocolate Chips • Cow • The Dead One • Demon Guard • Disguised Banana Guard • Dream Warrior • Ed • Elder Toad • Family • The Farm • Farm animals • Fat Bee • Fire Actors • Flame King's brother • Flame Soldiers • Fly • Furnius • Giant Ant • Goliad • Green Penguins • Half Monster Demon • Ice Penguin Monsters • Jake's Grandmother • Jalapeño Pepper • Jay T. Doggzone • Jellyfish • Little Clown • Lorraine • Margles • Mirror Finns • Mountain goats • Prince Huge • Ricky • Ronnie • Shark Sword • Skeleton with Sword • Stormo • Torcho • The Train • Tree of Blight • Winged Lemongrab Horse • Woobeewoo • Woobeewoo Elder

Season 5	Agnes and Unnamed Flame Person • Alarm Cat • Ann • Bartram • Bath Boy Gang (Bath Boy Gang leader) • The Beast • Bird Man Skeleton • Bird Nest Worm • Blanket Dragon • Blargetha • Blue Gumdrop Guy • Blueberry Cops • Boney • Box Prince • Box Prince Impostor • Braco • Bubble/Air • Buck Pudding • Butt Chest • Candy Boss • Canyon • Cart Creature • Cart Guy • Captain Banana Guard • Cave Dwellers (Five More Short Graybles) • Chandelier Bat • Cherry Cream Soda • Choose Bruce • Christopher the Honorary Banana Guard • City Fox • Crab Demon • Crabbit Familiar • Cranky Cookie • Cream Puff Gentleman • Danny • Duke Suck-Lemon • Elder Plops • EMO • Farmworld Marceline • Farmworld Martin • Farmworld Minerva • Farmworld Simon Petrikov • Female Cherry • Finn's Baby Brother • Flint • Flying Lettuce Brothers • Flying Troll • Funeral Guests • Gareth • Giant Ant Monster • Giant Goo Skull • Giant Penguin • The Glitch • Grass Bear • Gunthalina • Head Worm • Hole Frog • Imaginary Jake • Island Lady • James Baxter • Jameses • Jay & Bonnie • Joe Milkshake • Johnnie • Jordan • Kartemon • Lemon Guards • Lemon Head • Lemonhope • Lemonjon • Lenny the Beaver • Leviathan • Little Buddy • Little Dude • Loafy • Mail Bird • Mama Trunks • Man In The Wall • Milk Ghost • Nurse Pound Cake's Uncle • NX vcjZmQ9w • Ogdoad • Other Pink Interdimensional Creature • The Owl • P.A. announcer • Paris • Pete Sassafras • Petey • Phlannel Boxingday • Pillow Child • Pink Interdimensional Creature • Pirates (Lemonhope Part 1) • Plop-Top/Dump-Dome • The Porcupine • Princess Bubblegum Bot • Prismo's Uncle • Pterodactyl • Quilton • Randy (Apple Wedding) • Randy (Candy Person) • Randy and Unnamed brother • Rap Bear • Rasheeta • Reptilian Clone • Reptilian thugs • Rock Giant • Rock Woodsman • Roger • Roselinen • Sand Worm • Samantha • Seed-Wad • Shoko • Shoko's tiger • Slider Guys • SMOs • Snake Runner • Sparkle • Sparkle's mother • Spider-snake hybrid • Squeez-E-Mart boss • Squirrel (Up a Tree) • Stranson Doughblow • Sue • Suitors • Suzy • Tentacle Monster • Three-Pronged Lemon Child • Ursula • Vapor Swamp Monsters • Veiny Monster • Wizard Bill • Wizard Police • Wizard Prison Chef

Season 6	Alien predator • Alien prisoners • Alien worm • Balthus • Beau • Berdzerd • Billybee • Billybee's Gang Bees • Blue Nose • Breezy • Brownie Guy • Bryan • Cadmus Legion • Candy Birds • Caramel Sally • Chatsberry • Cheryl • Chinchizard • Chips and Ice Cream • Circus Insects • Citadel Prisoners • Cow Farmer • Cube Person • Danny Gladiolas • Darren • Daughter of Peace Master • Duty Manager • Erin • Evacuation Man • Fawn • Flambo's Brother • Food Boys • General Tarsal • Ghost Fly • Ghost Mushroom • Giant Basket Transporter • Giuseppe • Gnome Tenant • Goose • Goralina • Guardian of the Mountain • Gummi Water Boy • Hairy Person • Huge King • Ice Imp • Justin Rockcandy • Kent • Lamp • Lauren • Leaf Beard • Leaf Man • Lieutenant Gamergate • Lifeguard • Linda • M.A.R.G.L.E.S. • Madam Eclair • Magwood • Martin 2 • Matthew • Mayor • Mochi • Monks • Morty Rogers • Mother Lard • Mr. B • Mr. F • Mr. Goji Berry • Mrs. Goji Berry • Mrs. James • Muffin Giant • Nina • Nurdle • Old Green Person • Pat • Peace Master • Peace Master's Baby • Penny Candy Guy • Prismo's Son • Purple Comet • Rabid Possum • The Raccoon • Radio DJ • Rat King • Ringmaster • Sally • Salsa Cloud • Seven • Shadow Slender Demons • Shazbaz • Shelby’s Girlfriend • Slimy D • Son of Peace Master • Space Moth • Speedboat • Star Man • Taffi • Talking Leaf • Thought Cannon Wand wizard • Truffles • Tuber • Upper Middle Class Wildberry Kids • Urgence Evergreen • Veritas Brigade • Void Caster • Weeping Willy

Season 7	ALLMO • AMO • Armadillo • Bobby • Bunny Girl • Burrito Man • Cactus Guy • Carlos • Citizen Peanut/Wilfrid • Cloud Dance • Cyca • The Empress • The Fool • Grassland Animals • Haydancy • The Hierophant • Honey Man • Living Pie • Me-Mow's Horse • The Moon • Mother Mushroom • Music Hole • Neddy • Ocean Council • Old Banana Guards • Sandwich Paul/Sensei Paul • Spirit Dream Warrior • The Storm • Terry • Thunder Boar • Tommy • Two Bread Tom • Vampire essence monsters • Vampire King • Vampire Minions

Season 8	Aadil • Albert • Alien Husband • Alva • Assistant Doctors • Becca • Bee-Mo • Benton • Better Reality Users • Betty Grof A.I. • Boobafina (Grotto World) • Booshy • Bronwyn's Friends • Bun Bun • Bun Bun's dog • Bushboots • Candy Box Man • Candy Elemental (St. Pim Era) • Candy Elemental (Unknown Era) • Candy Girl • Captain Majesty • Choose Goose (Grotto World) • Clock Bear • Dolphin People • Dr. Gross • Early Creature • Elder Rollio • Ele-fly • Elephant Summoners • Evil Hermit • Fire Elemental (St. Pim Era) • Fire Elemental (Unknown Era) • Flaming Garbage Martian • Flower Marcy • Founders • Frieda • Giant Parrot • Gibbon • Grand Prix • Grass Demon • Grass Worm • Greg (Islands) • Greta • Guardian • Hans • Hiders • Hiram • Jennings • Kim Kil Whan's Employees • King • Kulap • Lady Rainicorn (Grotto World) • Lee • Little Purple • Luke • Lynda • Mantis Man • Mechanical Dolphins • Merchant • Michel • Mike R. • Moniker • Mr. Fox (Grotto World) • Mr. International • Mr. Outrageous • Mr. Pig (Grotto World) • Pete the Punk • Pink Pond • Reggie • Roy • Santa • Seekers • Singing Plants • Slime Elemental (St. Pim Era) • Slime Elemental (Unknown Era) • Spear Bear • Starfish Martian • Sue (Islands) • Sveinn • Tai • Todd • Tree Trunks' Alien Children • Turtle Announcer • WAITMAN79 • Weirdo Finn • Weirdo Jake • Whipple • Whipple's pursuers • Widow • Widow's Bodyguard • Widow's Tiger • Wild Trap Mountain inhabitants • William • Wing

Season 9	Abraxis • Banana People • Banana with Sunglasses • Bandanna with Sunglasses • Blue Jay • Bob Leaf • Bogo • Candy Worm • Cloudy • Cool Guy • Female worshipers • Giant • Gummy Fish • Meatloaf Dealer • Michael • Other Fionna • Person with Broken arm • Ted • Wall of Water • Weekend City inhabitants

Season 10	Alarm Clock Creature • Baby Teeth Finns • Cake People • Cake People Mutant • Cake Titans • Cave Dwellers (Come Along With Me) • Fake Nerraw inhabitants • Future Mole • Ghost Thugs • Gingerbread Rapper • Grumbo • Guard Man • Gumball Guardian Mutant • Ixcano • Life Given TNT • Mind Frogs • Newt-like creature • O • Past Lady • Peanut • Pirates (Ring of Fire) (Mr. Faidutti) • Pudding Troll • Randy's girlfriend • Rapper Chipmunk • Shermy • Son of Rap Bear • Tiny Mammals (Cookie) • Warren Ampersand's other children • Wishy • X • Yak

Distant Lands	Ancient Wizards • Blaine • Cadebra • CGO • Cole • Con Wizard • Darling • Dr. Caledonius • Drift inhabitants • Flaming Skull • Glassassins • Glassboy • Hugo • Kirin • KS-2 • Larry • Larvo • Lee (Wiz Arts) • Lenny Longlegs • Limeston • Magic Felicia • Manta Creature • Momdebra • Monsters of the 1st Dead World • Olive • Potable Wizard • Sandy • Sennwald • Shafter • Sir Soda • Souls in Life's Realm • Spader Petersen • Sweetie • Tugboat • Twinkletoes • Undertakers • Usurpers of Wizard City • Waffle Cone Trolls • Wiz Arts students • Y4/Y5 • Y5's Dad

Fionna & Cake	Astrid • Babette • Baby Cinnamon Bun • Baby Finn • Baby Ice King • Baby Jake • Baby Jiggler • Baby Lady Rainicorn • Baby Magic Man • Baby Ricardio • Baby Tree Trunks • Balloon animal • Banana Guards (Silent World) • Banana Guards (Winterworld) • Bear World inhabitants • Beard Guy • Billy (Vampireworld) • Blade Wizard • BMO (Extinct World) • Bonnibel Bubblegum (Vampireworld) • Bonnie Mertens • Boobafina (Silent World) • Bug+BurpBall • Burger • Bystanders (Fionna-world) • Bystanders (Silent World) • Caged Dude • Canaria • Candy Cane Guy (Winterworld) • Candy Handcuffs • Candy Person 22 (Winterworld) • Candy Queen • Casper • Child Wizard • Chocoberry (Winterworld) • Cinnamon Bun (Winterworld) • Cocka-tikes • Coffee Guy • Cookie Guy (Winterworld) • Dimensional Tree creatures • Egg-like being • Farmworld Finn's Wife • Farmworld Peanut • Farmworld Starchy • Feathered Reptilian creatures • Fionna Lookalike • Fire Tiger • Goblin with Devil Sticks • Gumball Guardians (Baby World) • Guy with Boading Balls • Huntress • Ice King (Extinct World) • Ice Marceline • Ice Prince • Ice Prince's Penguin • Ice Scouts • Ice-O-Tomaton • Iceclopes (Winterworld) • James (Winterworld) • Jay Mertens • King Cockatrice • Little Destiny • Marceline (The Star) • Marshmallow Kids (Winterworld) • Martin Mertens (Vampireworld) • Moon Demons (Moon Demon King) • Mossy Rock Humanoid • Mr. Cupcake (Winterworld) • Mudskipper • Multi-Headed Scorpion • Nightmare Gary • Nightmare Marshall Lee • Nightmare Simon • Nova • Oscillator • Pastry Cake • Pastry Fionna • Pawn Swan • Peppermint Butler (Silent World) • Pillow Kid • Pony • Rat-like monster • Ratbus • Ratbus' Victims • Simon Petrikov (Vampire World) • Skater Fairies • Spider Tattoo Artist • Tammy • Television characters (Anime Heroine & Anime Villain) • Tennis ball • Thunderbirds • Train Conductor • Trauma Jon • Tree Trunks (Silent World) • Tree Wizard • Turtle Princess Robot • Unknown Baby • Unknown Green Wizard • Unnamed Farmworld Children • Vampire King (Vampire World) • Van Driver • Vase Wizard • The Winter King • Winter Kingdom inhabitants • Witch Wizard

Comics	3MO • 8-Head Ted • Adventure Tim • Alistair Blacktide • Allen • ALN • Anbaris • Bad Guy Magpie • Bad Haircut Wizard • Bartholomew • Basketball Wizard • Bear Queen • Betty (Comic) • Blake • Bongo • Car V. Mudflap • Carl the Gem • Casey • Charlie Mayor • Cherry Chris • Corn Syrup Wizard • Craig • Creepy Finn & Jake robots • Dan • Dark Magistar Templi Marble • Devil Cake Downers • Dr. Broccoli • Dr. Broccoli's mother • Duke of Limesnatch • Ewlbo • Eyebabes • Fart Fairies • Finn the Fearful • Fisho the Colossal • Flynn • Gata • Gata's Mother • Ghost Destroyers • Greg • Gum • Guntors • Guy • Hairy Chris • Ham-Pire • Hambone • Hook Crook • Hot Dog Princess' bun • Janice Bizzlethatcher • Keila • Kevin • Lady Stabsworth Z. Backwash III • Lady Unibow • LeafLans • Lord Lazertron the Third • Lord Lazertron the Third's Mom • Lord Vandalstine • Lumpy Space Predators • Lumpy Space Rat • Maggee • Maggee Clone • Maggee's Dad • Maggee's Mom • Magical Kid • Malloy • Marttee • Mice King • Mnemonoid • Monkey Wizard • Mow-Me • Mr. Trots • Nellie • None Shall Pass • Orphan Ice Prince Timothy • Otto V. Platesticker • Painting King • Peanut Butter Dragon • Penelope • Penny (Comics) • Pickles • Potpourri King • Potpourri Queen • Randall N. Byron • Rock Candy Lady • Sewer Wizard • Sinorses • Song Birds • Todd (Comics) • Topiary Nose • Tuff • Ulyssses • Weebles • William (comic) • The Wish Witch

Video Games	Doodle Wizard • Dumb Ice Rock • Ice Skeleton • Pillowmint Butler • Sunny • Tiny • Undead Housekeeper