Pianosaurus

Pianosaurus

Gallery

Audio

Pianosaurus
Full Name	Pianosaurus
Aliases	Experiment 1163 1163
Affiliation	Playtime Co. (formerly) Bigger Bodies Initiative Harley Sawyer † (experiment creator) Doey the Doughman † (former ally; enemy/killer) Safe Haven (former home) Safe Haven toys † (former allies)
Biographical Information
Status	Deceased
Creation date	1990 (Bigger Body)
Date of death	2005
Place of death	Pianosaurus' Enclosure
Cause of death	Beaten to death and devoured by Doey the Doughman.
Descriptive Information
Species	Bigger Body Toy (dinosaur-piano hybrid) Living toys (miniature versions) Human (formerly)
Gender	Male
Height	7.7 ft (2.30m)
Appearances
Role	Minor character
Voiced by	Alex Rochon
Appears in	Chapter 4 Icepick ARG Trailer Chapter 4: Safe Haven Miscellaneous Content YouTube Recording
Debut	Chapter 4 Icepick ARG (reveal) Chapter 4: Safe Haven (physically)

“	♪ Hello! I'm Pianosaurus! ♪	”
— Pianosaurus' cardboard cutout noicon

Pianosaurus is a character in Poppy Playtime and is exclusively featured in its fourth installment, Chapter 4: Safe Haven, in which he made his in-game debut.

Pianosaurus was a dinosaur-piano hybrid toy created and produced by Playtime Co. Like many of the company's other characters, his likeness was used to create an oversized organism under the Bigger Bodies Initiative. This organism was created in 1990 - the subject being an unknown child - and was Playtime Co.'s 1163rd experiment, under the designation of Experiment 1163. The latter was deemed a failure by Dr. Harley Sawyer, being assigned to testing as a result. He met his demise in 2005 at the hands of Doey the Doughman, who ate him.

Appearance

Pianosaurus is a large bipedal dinosaur with piano keys running down the entire underside of his body, starting at the neck and ending at the tip of his tail. He has a green body with two small black eyes similar to a chameleon, a red horn on the right side of his head, a yellow one on the left side, and an orange one in the middle. He also has a flattened snout with a tiny yellow spike and pink blushes on the corners of his mouth.

His neck is long with four multicolored spikes, while his torso is much larger and rounder with smaller spikes along his back that run down its long tail, which ends in what appears to be a club. Pianosaurus' front legs are long and lanky, but the forearms are bigger and more robust, ending in three multicolored claws. The back legs are slightly larger and look bird-like, also ending in three claws. Overall, both his claws and spikes form a full rainbow of colors.

The Pianosaurus toy's most iconic feature is the small keyboard it has for teeth in the shape of a wide grin. Interestingly, while the toy version has the keys in the normal piano configuration of W-B-W-B-W-W-B-W-B-W-B-W (W = white keys, B = black keys, repeated), the Bigger Bodies version uses W-B-W-W-B-W (repeated) configuration. This could be the possible reason of why he couldn't play his piano rhythms in tune according to his Prisoner Profile.

Personality

“	Originally released as part of a full set of musicians, Pianosaurus served as the harmony for the group, playing out his beautiful piano tunes through his keys/teeth. Remember what happened to the dinosaurs? Yeah, so do these guys. Don’t worry though, these punks think it’s all kind of a joke.	”
— Character Bios

As shown in his fictional cut-out quotes, Pianosaurus has a jovial and enthusiastic personality. He is known to enjoy singing very much and to have a habit of singing while he speaks. He also jokes about what happened to the dinosaurs.

According to his Prisoner Profile, his Bigger Body version appeared to have no human qualities whatsoever, and had the behavior of a rabid animal, eating whatever fit into his mouth regardless of appetite. He was also described to snap at any perceived motion, to fight against any nearby staff and to not be able to play his piano notes in tune. The Pianosaurus comic series reveals that he would see things in front of him differently, and often in a much more positive light than what was really happening. For instance, when he accidentally murdered a mini Hoppy Hopscotch, he believed that she was actually dancing on stage with him.

In Chapter 4: Safe Haven, when first encountering The Player, who he saw as Bron, Pianosaurus began to charge at them, with the intention of asking if they want to join his band. But to the eyes of The Player, it looked like he was going to kill them. This, and many other instances, show that Pianosaurus can often be unaware of how he presents himself to others.

History

Backstory

The Pianosaurus toy was released sometime during or before 1990 as part of a full band set, serving as the harmony of the group. He would play piano tunes with the keys on his mouth. Pianosaurus starred in his own commercial and was sold without batteries for the price of $19.95.

Following the procedure to create the Bigger Body form of Pianosaurus, Dr. Harley Sawyer noted that there was little or nothing left of the "bright, joyful, bundle of laughter" mentioned in the Counselor's report, and stated displeasure that the procedure had resulted in another mindless "invalid" in a similar vein to Boxy Boo, with Pianosaurus lacking the size or power to even fulfill a similar role. Sawyer also remarked that Pianosaurus couldn't even play his piano rhythms in tune. As a result of this disappointing outcome, Sawyer ordered Pianosaurus to be used in testing and be kept there, should he survive. And survive he did, defying Sawyer's expectations and living for 15 years until the arrival of The Player.

Sometime around 2005, Pianosaurus moved to the Safe Haven with Doey the Doughman and his allies. However, one day, he accidentally killed a mini Hoppy Hopscotch toy while he was playing his music, resulting in a heartbroken Doey banishing him from the hideout. He later found himself in the Prison Utility Zone, where various Nightmare Critters were residing. So Pianosaurus decided to put on a concert for them, but just like the last time, he accidentally murdered his viewers by stamping on them. Believing that the concert needed more band members, Pianosaurus went off in search of them and found himself in an enclosure where he would munch down on a deceased Bobby BearHug toy with the belief that he was asking KickinChicken to join the band.

Chapter 4: Safe Haven

Upon crossing a ledge over Pianosaurus' Enclosure, The Player got a full view of Pianosaurus as he fed on said dead toy, on the ground out of their view. Suddenly, they slipped and fell into Pianosaurus' enclosure, drawing his attention. After spotting them, he looked curiously before striking a small pose and rushing towards The Player (thinking they were Bron with a tambourine) with the intention of asking them to join the band. But before he could reach them, Doey the Doughman (presumably in his aggressive form) reached out from the eerie darkness in the background and caught the dinosaur, pulling him back and restraining him to the ground.

“	Rest in keys.	”
— Harley Sawyer, The Doctor Takeover

Helpless, Pianosaurus was raised into the air by Doey before he violently smashed him against the walls and floor, then pulled him into the darkness where he ate him in what sounded like a ferocious manner. During the process, a clawed hand and a spinal spike were seen flung aside until, at the end of the feast, Pianosaurus' head slid out into view, singing one final out-of-tune chord. Doey the Doughman had gotten his revenge. Back in his passive form, Doey remarked how filling the dino was before approaching The Player to introduce himself.

Day-in-the-Life Comic

PianosaurusDay-in-the-Life Comic
Location
Precise Location	Mob Entertainment's social media
General Information
Type	Comic series
Date	December 15, 2004 to 2005
Characters	Pianosaurus Hoppy Hopscotch (mini toy) Doey the Doughman Baba Chops (mini toy) Maggie Mako (mini toy) Poe (mini toy) Alister Gator (mini toy) Icky Licky (mini toy) Touille (mini toy) KickinChicken (imagined) Bobby BearHug (dead toy) Bron (imagined) The Player
Image Chronology
Previous	Character Bios
Next	The Motives For One's Humanity

The Pianosaurus Day-in-the-Life Comic is a series of illustrated comic panels showcasing a day in the life of Pianosaurus. The comics were entirely posted on Mob Entertainment's social media accounts, with the community voting on what would happen over time. The first poll was posted on July 23, 2025. A mini Hoppy Hopscotch is depicted listening in through a door on Pianosaurus poorly playing his music, and entering the room without hesitation, while Pianosaurus envisions himself skillfully performing for a crowd on stage in a live show. The community was given a choice about whether the musical dinosaur should pull mini Hoppy onto the stage with him, or encourage her to crowd surf.

After the community voted to pull Hoppy out to dance with him, Pianosaurus does just this and imagines mini Hoppy performing alongside him. But in a dark turn of events, the truth was that Pianosaurus had accidentally crushed her, with Doey the Doughman witnessing this and furiously banishing him from Safe Haven. Pianosaurus envisions this as him being kicked out of the venue by Doey as a security guard. The community was given a choice between having Pianosaurus head to the park to perform a concert, or the Train Station to start a small musical jam session.

After the community voted for Pianosaurus to head to the park to perform a concert, a timeskip happens to mid-2005, and he travels to the Prison Utility Zone and imagines himself walking through a park and over a river on a sunny day. As he does this, lurking Nightmare Critters emerge from their hiding spots and reveal themselves to the dino, who sees them as colorful animals near a tree. The community was given a choice between having Pianosaurus pet the Critters or having him put on a concert for them.

The community voted for Pianosaurus to put on another concert, and he started playing his music and imagined the Critters enjoying it. However, just like the fallen mini Hoppy Hopscotch, the Nightmare Critters also suffered an unfortunate fate. Pianosaurus accidentally started crushing them one at a time as they attempted to watch his performance. The community is given a choice between having Pianosaurus start a parade or having him find more band members to join the concert first.

After the community voted for Pianosaurus to find more band members, he wandered off and imagined himself waving the unknowingly-deceased Critters goodbye. As he strolled through the imaginary city, Pianosaurus found himself asking KickinChicken if they want to join the upcoming concert, though the reality was that he was chewing on the remains of a dead Bobby BearHug toy. However, somebody suddenly fell into the area, catching Pianosaurus's attention. This somebody was The Player, who had slipped while trying to navigate a narrow ledge. Believing that they were Bron, Pianosaurus rushed toward them to ask if they wanted to perform in the concert, however, Doey, wanting revenge (and food), grabbed the dino and dismembered him, concluding the comic series. The final two comics reveal that the events portrayed throughout all of them are canon.

Trivia

• Before Chapter 4: Safe Haven was released, many fans believed that Experiment 1322 was Pianosaurus.
• Pianosaurus was the first monster to be discovered in the Chapter 4 Icepick ARG.
  • Developer Ben Rooker stated that Mob planned to reveal Pianosaurus two and a half months later, but they were unaware that Photoscan 06, the image he was hidden in, could be decoded.
• In the teaser, Pianosaurus has blood on the left side of his mouth, which implies that his piano mouth somehow opens so he can eat, since all the experiments need to eat (except some like the Prototype and Poppy) and he is seen "eating" some Mini Smiling Critters in Chapter 4: Safe Haven.
  • The Day-In-The-Life comic did showcase how Pianosaurus eats. He seemingly does this by pulling up the piano keys, revealing a void behind them.
• The Prisoner Profile, Experiment 1163 could be interpreted to say that Pianosaurus had been in his enclosure since 1990, with the main story takes place in 2005, meaning Pianosaurus has been imprisoned for the whole 15 years.
  • This is largely disproven by the Day-In-The-Life comic, which shows that Pianosaurus had, at some point, become a resident of the Safe Haven, before being expelled by Doey and eventually finding himself in the enclosure where he encounters the Player.
• Pianosaurus is the second secondary antagonist to be fully shown in a teaser, unlike other enemies that were only shown in the game's trailers, the first being Baba Chops.
• Some have pointed out how Pianosaurus, at least the Bigger Body version, twitches whenever he plays a note, suggesting that pressing his keys actually causes him pain (yet he does it to himself anyway).
• The toy would be mostly inspired by a collection of 1977 Dinosaur toys, all also named "Pianosaurus", which is on sale on eBay.
  • It could also be based off of the Meowsic Cat Piano, primarily in the face shape.
• Pianosaurus bears a few similarities to DJ Music Man from Five Nights at Freddy’s: Security Breach.
• Pianosaurus' eyes resemble the eyes of chameleons, making it possible that they could work similarly.
• Using a camera hack, Pianosaurus' neck and tail can be seen to stretch a little and spin.
• Pianosaurus is most likely a hybrid dinosaur as multiple body parts come from different dinosaurs.
  • His claws and arms resemble a Therizinosaurus.
  • His neck might be that of a Plateosaurus.
  • The spikes going down his back are based on a Stegosaurus.
  • The three horns attached to his head are based on a Triceratops.
  • The ball on the end of his tail belongs to the club-tailed dinosaur Ankylosaurus.
  • His bipedal stance and claws are based on theropod dinosaurs like the Tyrannosaurus, Giganotosaurus, Allosaurus, or Spinosaurus.
• He is the only one of the experiments (besides Bron, Boogie Bot, and the other minor toys) who did not get mentioned in the 12 Days of Playtime, despite Yarnaby, the Nightmare Critters and Harley Sawyer being a part of it.
• Pianosaurus is currently the monster with the shortest amount of time shown alive, coming in at approximately 22 seconds, as he only has one very brief encounter with The Player before being snatched up, killed and eaten by Doey.
  • This has resulted in major controversy for those disappointed with how Pianosaurus was treated, starting a hashtag trend in the fan base known as "Justice for Pianosaurus".
  • Along with that, Pianosaurus has become a bit of a joke because of how little screen time he has, despite being advertised as a separate monster and having his own teasers.
    • Ironically, his teaser was the first to be posted on YouTube Shorts instead of a separate YouTube video. The teaser's duration was also greater than Pianosaurus' actual encounter.
  • On Discord, Zach Belanger responded with a post saying "Y'all really like Pianosaurus huh".
• On further observation, Pianosaurus is barely taller than The Player. He only appears bigger than he is during his death cutscene due to the camera angle.
• Like the Nightmare Critters, Pianosaurus didn’t exist before former director Isaac Christopherson left Mob Entertainment.
• As confirmed by Mob, Pianosaurus sees the world around him in a more innocent and childlike way that is represented as if it were a drawing made by a child, such as imagining himself playing music with the toys, viewing Doey as a policeman, and seeing the player as Bron, unaware of the damage he was causing.
  • This could be a reference to Pyro from Team Fortress 2, who saw the world as "Pyroland", weapons as innocent tools, and his enemies as flying babies that were always happy.
• The Day-in-the-Life comic shows that Pianosaurus lived in Safe Haven alongside Doey and the toys, confirming that this event took place after the Toy War.
  • It is likely that Pianosaurus joined the rebellion shortly after the war, since in the mural depicting some of the events of the war, he was on the enemy side.
• The Day-in-the-Life comic was a joint collaboration between Amber Ogden and Katie Stickler, who drew the left-side panels and right-side panels respectively.
• Pianosaurus is the second character to get his own mini-comic, the first was Bunzo Bunny.
• Pianosaurus is the second character of his species to be a dinosaur, the first one being Bron.