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Monster, alternatively referred to as the Monster and also known as the Lemon Demon, is the secondary antagonist of Week 2 and Week 5, the latter of which also features him as a background character. He forcefully takes over for both weeks' final tracks, Monster and Winter Horrorland, respectively.


Monster appears to be a demonic humanoid creature with a body mostly comprised of black scribbles apart from his neck, which is instead a violet-pink color. He only has two stubs on each hand and foot. His head is in the shape and color of a lemon with bloodshot eyes and eerily large black pupils. He always has a wide open smile with light-pink teeth that extrude from his mouth. Blood stains the roots of his teeth and the bottom of his eyes.

During Week 5, he wears a Santa hat that's torn on the end.


Monster is an eccentric and mysterious individual who craves the flesh and meat of humans as well as demons. He likes to sing about how he wants to kill and eat people, including children, in gruesome detail. He is willing to trick others to get what he wants, as shown when he deceived Skid and Pump as an attempt to get Girlfriend so that he could eat her. Monster has been described as being "just insane,"[1] and it has been hinted that he has not found inner peace.[2]


During the events of Week 2, Monster wants to eat Girlfriend on Halloween night, so he comes across Skid and Pump and tricks them into thinking Girlfriend is made out of candy and to retrieve her for him. The kids come to Girlfriend's house and decide to rap-battle Boyfriend to get her. However, the kids lose and fail to retrieve the girl, so Monster decides to step up and get her himself. He eventually decides he'll eat Boyfriend as well, and repeatedly voices his desire to kill the two and eat them. Unfortunately for him, he loses to Boyfriend and leaves.

Monster would later return in Week 5, where he initially only witnesses Boyfriend's face-off against Daddy Dearest and Mommy Mearest, but later takes over the parents' spotlight and sings against Boyfriend with the same goal of eating him along with his girlfriend. This time, his verses are Christmas-themed and talk about various ways he could cook and eat both Boyfriend and Girlfriend. Unfortunately, Monster once again loses against the blue-haired man and is defeated, for now. Since Monster had taken over the final songs of the seasonal weeks (with Week 2 being Halloween and Week 5 being Christmas), it is likely that he will reappear in a future week based on a holiday.



Although Monster wants to eat Boyfriend, the rapper is not afraid to face off against him in singing battles, even as he constantly makes threats toward Boyfriend and Girlfriend. Thanks to Boyfriend's rapping skills, Monster is easily defeated each time before he can do anything to the couple.


Monster has a strong desire to eat Girlfriend, and he sings in gruesome detail about how he plans to do this. However, even with Monster's constant threats, Girlfriend does not seem to be afraid of him during his songs.

Skid and Pump

Monster tasks Skid and Pump with getting Girlfriend for him so that he can eat her. The children fail to do this, however, as Boyfriend beats them twice during their sing-off, leading Monster to take matters into his own hands.


  • Monster's design used to look different during development; he had a more grotesque look and teeth all over his body. He was also shown residing in a pumpkin with a face carved onto it.[3]
  • Unlike the other characters, Monster is currently the only one to fully sing in English instead of using a chromatic scale or gibberish, with the exception of Girlfriend in Tutorial.
  • Judging by his lemon-shaped head and the tone of his song, many people believed Monster to be a reference to Lemon Demon, the musical pseudonym of internet comedian and musician Neil Cicierega. This, however, was confirmed not to be the case by ninjamuffin99 in a Reddit AMA,[4] and that the similarities were purely coincidental.
    • People being led to believe that Monster was a reference to Lemon Demon was likely due to Lemon Demon's music being incredibly popular on Newgrounds in the early 2000's, and with the official release of "The Ultimate Showdown of Ultimate Destiny" currently having over 13 million views on Newgrounds alone.
    • Despite popular belief, Monster's voice was not provided by Neil Cicierega either. All of Monster's songs were produced and performed by Bassetfilms, an animator on Newgrounds who helped design the character with PhantomArcade.
  • Monster is commonly known among the Friday Night Funkin' fandom as "Lemon Demon" due to his having a lemon-shaped head and similarities to the mascot of Neil Cicierega's Lemon Demon project. This became a popular alias for him to the point where, according to a Tweet made by Needlejuice Records, they had to explain Monster to Cicierega in a business meeting, as he had no idea why the term "Lemon Demon" was trending.[5]
    • Needlejuice Records stated that "[Cicierega] thought it was neat, [whether] or not it was an intentional homage, to have a Lemon Demon in a game that is a love letter to Flash culture."[6]
  • Monster is the first character to have a song named after him, the second being Pico, the third being Senpai and the fourth being Darnell.
  • Monster is the only character whose tracks were not made by Kawai Sprite, having been composed by Bassetfilms instead.
  • The character is named "Monster" within the game's files. All in-game files related to him have this name, though it may have been only a temporary name simply describing what he was.
    • In a Tweet, ninjamuffin99 stated that the character "doesnt have a name per se, jus whatever people feel like calling him heheh, at least for now."[7]
  • According to ninjamuffin99, the level that uses Monster's eponymous song was not originally added as he was struggling with mapping it,[8] leading to Week 2 being a track short upon its release. Shortly after Monster's files were discovered, a user on Reddit mapped the entire song to his approval,[9] leading to the chart being included in the game until the song was recharted during the release of Week 7.
  • PhantomArcade posted a video to his TikTok showing off more detailed and animated Monster sprites whilst saying, "This is a Friday Night Funkin' leak. You guys don't even have the right file. You guys are playing with the wrong one," with the caption, "NO ONE EVEN HAS THE REAL ANIMATIONS, LMAOOOO."[10]
    • These sprites were eventually properly added to the game, with the old ones remaining unused.
  • Monster's earlier sprites have an issue where his neck would appear longer and clip inside his own mouth whenever he bopped his head down. This version also lacked the stretch mark lines that appeared in his Week 5 appearance.
  • Monster would go on to make his first official appearance in the game during the Week 5 update as both a background character and later an antagonist for the third track with updated animations. His unused track for Week 2, Monster, would be implemented into the game with the Week 7 update.
    • Prior to his official addition into the game, Monster's face always remained largely static whenever he sang. After being added, the updated sprites showed that Monster can contort and stretch out his face and eyeballs.
  • Monster's head appears on Roblox as a hat accessory for the player's avatar.[11] The item was originally taken off sale shortly after its release,[12] likely due to copyright issues, but was later authorized to be available by evilsk8r.
  • Monster is the second character to not use a microphone, the first being Girlfriend and the third being Spirit.
  • Monster's head was confirmed not to be an actual lemon and that it was merely shaped and colored like one.[13]
    • In fact, his head wasn't actually designed to look like a lemon in the first place; the fact that it came to resemble one in his final design was purely coincidental. ninjamuffin99 confirmed that Monster's head is yellow because his concept art was drawn on a yellow canvas, and his head shape was supposed to be similar to that of Arnold Shortman from Hey Arnold! or Stewie Griffin from Family Guy.[14] Monster's head was supposed to be a head with a really stretched skin, and the color yellow was chosen for uncanniness, and while PhantomArcade didn't originally intend for his head to be a lemon, he changed his mind upon seeing the Friday Night Funkin' fandom's reaction to Monster.[15]
  • According to ninjamuffin99 in a Tweet, Monster has the demonic ability to alter someone's perception, which explains how the background in Week 5 was able to change.[16]
  • Interestingly, Monster's left pose depicts him going to the right rather than left, and vice-versa for his right pose.
    • This was later fixed in the WeekEnd 1 update.
  • Monster did not vote and does not watch any news. He simply exists in the world, in the shadows.[17]
  • Out of everyone in the Friday Night Funkin' universe, Monster would be the most likely to do cocaine.[18]
  • Monster knows the most basic fundamentals of mathematics, which makes him very intelligent compared to the other known cast members. This makes him a formidable foe.[19]


  • Monster might have other monster like friends, as depicted in the Friday Night Funkin cassette art book.
  • Monster is commonly mistaken as his name being Lemon Demon, because he looks like a lemon. This has been debunked.
  • Monster has magic, where he can make illusions. This is shown in the week Red Snow, where his track titled Winter Horrorland has him change the entire mall to be creepier and scarier, with red becoming the main color of the mall. A Girlfriend head decoration also appears, that makes Girlfriend look extremely creepy and unsettling.
  • Lemon Demon plans to eat Girlfriend originally, not Boyfriend. Boyfriend is only getting in his way, so he eventually decides to plan to eat Boyfriend as well.
  • Lemon Demon tricked Skid and Pump into thinking Girlfriend was candy, and they had to take her to him. Once they fail, Monster steps in, thus setting up the entire plot of the week, Spooky Month.
  • Before Monster makes his sudden appearance in the week Red Snow, you can see him in the crowd watching, getting ready.


View Monster's gallery here.


  1. PhantomArcade (October 23, 2021). "the parents do it out of a weird pride and to be condescending as singing performers, the spooky kids wanna play, the monster is just insane, pico does it out of nostalgia/old habits, senpai does it to try and upstage you without violence, the tankmen do it cuz they're bored, etc". From "PhantomArcade AMA" on Reddit.
  2. PhantomArcade (November 16, 2021). "scrolling through amazon once a week n just buying whatever random bootlegs i can find. My headcannon for the Monster with the kawai face is they created a version of him where he finds inner peace, and he becomes bffs with evil monster". From Twitter.
  3. File:OG Monster.png
  4. ninjamuffin99 (December 12, 2020). "he is NOT a reference to lemon demon". From "hey guys its me ninjamuffin AMA" on Reddit.
  5. Needlejuice Records (April 18, 2021). "funny story, we had to explain the Funkin' monster to Neil during a business meeting because he had no idea what was going on and why "Lemon Demon" was trending". From Twitter.
  6. Needlejuice Records (April 18, 2021). "He thought it was neat, weather or not it was an intentional homage, to have a Lemon Demon in a game that is a love letter to Flash culture". From Twitter.
  7. ninjamuffin99 (March 25, 2021). "moms name is mommy mearest cuz its funny lol 'Mommy Must Murder' is just the title of the week monster doesnt have a name per se, jus whatever people feel like calling him heheh, at least for now". From Twitter.
  8. ninjamuffin99. "both meant to be added. Monster isnt in yet because its been hard for me to chart the song.". From "hey guys its me ninjamuffin AMA" on Reddit.
  9. ChaoticGamerCG (December 1, 2020). "Monster/Lemon Demon Fully Mapped". From Reddit.
  10. PhantomArcade (December 16, 2020). "lmao no one even has his real moves #fridaynightfunkin". From TikTok.
  11. Craxelss (April 8, 2021). "Crazy Lemon". From Roblox.
  12. hornsword (April 8, 2021). "Crazy Lemon". From Roblox. Archived from the original on April 8, 2021.
  13. ninjamuffin99 (March 25, 2021). "no, because his head isn't a lemon. That just so happens to be the shape and color of it". From Twitter.
  14. ninjamuffin99 (April 7, 2021). "LOL, complete coincidence. Not even meant to be a lemon. The art canvas that the boys were doin concept stuff on just happened to be yellow, and the head was more meant to be something like Hey Arnold head or Stewie Griffin head shape". From "Needlejuice" on Discord.
  15. Lendon (June 19, 2023). "Phantom Arcade Stream || "Wat Da Funk This Boy Up 2"" (3:41:34). From YouTube.
  16. ninjamuffin99 (March 25, 2021). "monster is able to twist perception". From Twitter. Archived from the original on March 25, 2021.
  17. ninjamuffin99 (December 31, 2020). "we will SEEEE it all a bit interesting the 2 player stuff. Gotta sort out details on that, but ideally it could be BOTH co-op and versus also monster didn't vote he doesn't watch any news he just exists in the world in the shadows and something else spooky like that". From "i programmed Friday Night Funkin AMA 2: the sequel" on Reddit.
  18. Lendon (February 25, 2023). "Some FNF Fun Facts" (0:57). From YouTube.
  19. Lendon (June 19, 2023). "Phantom Arcade Stream || "Wat Da Funk This Boy Up 2"" (1:07:34). From YouTube.