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This Article Contains Spoilers - WARNING: This article contains major spoilers. If you do not wish to know vital information on plot / character elements in a story, you may not wish to read beyond this warning: We hold no responsibility for any negative effects these facts may have on your enjoyment of said media should you continue. That is all.

Grunkfuss the Clown is a major antagonist in the One Night at Flumpty's series, appearing as a major antagonist in One Night at Flumpty's and One Night at Flumpty's 2, and one of the secondary antagonists of One Night at Flumpty's 3. He would have appeared in the cancelled One Week at Flumpty's.

He's a monstrous clown that is often thought to be the most dangerous enemy in the series.


One Night at Flumpty's

At 4 AM, Grunkfuss would suddenly appear in the hole in the office. Whenever the player pulls up the monitor, Grunkfuss will become more and more visible, continuing like that for nineteen phases. If his legs are fully visible and his mouth is wide open, he will attack the next time the player will put up the monitor. In Hard-Boiled Mode, Grunkfuss will show up at 2 AM. At 3AM on Hard boiled mode, he stops moving until 4AM, which is when he starts to move again.

One Night at Flumpty's 2

Grunkfuss will start on CAM 2, crouching and staring at the floor. At 2 AM, a hole will appear in the office and Grunkfuss will start staring at the camera. There is now a countdown on the top of the camera starting at two thousand, telling the player when will Grunkfuss' patience run out. When his patience runs out, the player has to turn off the lights in the office or Grunkfuss will kill the player. Grunkfuss raises the exposure meter more than everyone else, excluding the Eyesaur. In Hard-Boiled Mode, the countdown starts at eight-hundred.

One Night at Flumpty's 3

Grunkfuss activates on 1 AM. Like Birthday Boy Blam, he goes to the player's hallway. The difference is that the player can't shine their light at him, or otherwise Grunkfuss will kill them. Once the Normal Night ends, Flumpty kills everyone, including Grunkfuss.

Other Media

One Night at Flumpty's 2 (Troll Game)

In the troll game, Grunkfuss would pop out from the wall after Flumpty and Birthday Boy Blam were killed, saying "boo". The player now has to shoot Grunkfuss to win the game.

One Week at Flumpty's

Grunkfuss would be one of the two threats on Night 3, alongside the Redman.


  • Grunkfuss was originally called The Clown.
  • Grunkfuss was originally supposed to have a Music Box in the second game, much like the Puppet. This was scrapped as series creator Jonochrome thought it was an overused idea.
  • Grunkfuss's behavior might be a reference to a fellow Five Nights at Freddy's fan-game Five Nights at Wario's, where Mario has the same behaviour.
  • Like with most villains, it's unknown if Grunkfuss enjoys hunting the player or is forced to do it by Flumpty Bumpty.


           ONAFNewLogo.png Villains

Flumpty's Gang
Flumpty Bumpty (Clones) | Birthday Boy Blam | Grunkfuss the Clown | Beavowl (Beaver & Owl) | Redman | Eyesaur | Golden Flumpty

           FNAF Logo.png Villains

Mainline Games
Original/Withered Animatronics
Freddy Fazbear | Bonnie the Bunny | Chica the Chicken | Foxy the Pirate | Golden Freddy
Toy Animatronics
Toy Freddy | Toy Bonnie | Toy Chica | Mangle | Balloon Boy | JJ | The Puppet
Shadow Animatronics
Shadow Freddy | RWQFSFASXC
Phantom Animatronics
Phantom Freddy | Phantom Chica | Phantom Foxy | Phantom Mangle | Phantom Balloon Boy | Phantom Puppet
Nightmare Animatronics
Nightmare Freddy/Freddles | Nightmare Bonnie | Nightmare Chica | Nightmare Foxy | Nightmare Fredbear | Nightmare | Plushtrap | Nightmare Mangle | Nightmare Balloon Boy | Nightmarionne
Funtime Animatronics
Circus Baby | Funtime Freddy and Bon-Bon | Ballora | Bidybabs | Minireenas | Ennard | Bonnet | Yenndo | Lolbit | Electrobab
Scrap Animatronics
Scraptrap | Scrap Baby | Molten Freddy
Mediocre Melodies
Happy Frog | Mr. Hippo | Pigpatch | Nedd Bear | Orville Elephant
Rockstar Animatronics
Rockstar Freddy | Rockstar Bonnie | Rockstar Chica | Rockstar Foxy | Lefty
Event-Based Animatronics
Jack-O-Bonnie | Jack-O-Chica | Dreadbear | Grimm Foxy | Freddy Frostbear
Springtrap | Bare Endo | 8-Bit Baby | Dee Dee | Music Man
Afton Family
William Afton | Elizabeth Afton | The Brother
Charlotte Emily | The Brother's Friends | Vanessa A.
Fazbear Entertainment | Afton Robotics, LLC | Fazbear Funtime Service
Toy Chica (Toy Chica: The High School Years) | The One You Should Not Have Killed | Glitchtrap | PlushBabies

Spin-Off Games
FNAF World
Scott Cawthon | Chipper | Security | Chica's Magic Rainbow | Dee Dee
Freddy in Space 2
Security Breach: Fury's Rage
Radioactive Foxy | Chica the Chicken | Mangle | Broiler Baby | Clown Springtrap | The Puppet | Freddy Frostbear | Vanny | Dream Geist

Novel Trilogy
Original Animatronics
Freddy Fazbear | Bonnie the Bunny | Chica the Chicken | Foxy the Pirate
Twisted Animatronics
Twisted Freddy | Twisted Bonnie | Twisted Foxy | Twisted Wolf
Funtime Animatronics
Circus Baby | Mangle | New Freddy | Baby Crawlers
Afton Family
William Afton | Elizabeth Afton

Fazbear Frights
Eleanor | Afton's Amalgamation | Funtime Freddy | Fetch | Plushtrap Chaser | Foxy the Pirate | Ballora | Chica the Chicken | Springtrap
Lonely Freddies | Minireenas | Funtime Foxy | Golden Freddy | Julius's Exoskeleton | Lucky Boy
Andrew | William Afton
Julius | Dominic | Hudson | Lewis | Unnamed Drug Dealers
Glitchtrap | The Blackbird | Faz-Goo
Spring Bonnie | Ralpho | Shadow Bonnie | Sea Bonnies | Kids at Play

Fazbear Fanverse
One Night at Flumpty's

Disambiguation pages
Freddy Fazbear | William Afton | Circus Baby