Even in the Japanese localization, the initial greeting is in English so as to give no further hints to what character it could be. This phone call is speculated to be for Gaster, but it could be for Gerson, Glyde, Gyftrot, Grandpa Semi, or Grillby instead. The phone call begins asking for somebody whose name starts with the letter "G." The caller then recognizes that they dialed the wrong number, and proceeds to sing the Wrong Number Song. In Room 70, the northernmost part of Snowdin, the protagonist's Cell Phone may randomly receive a call. If the key is brought to the horse stable, the same figure from Room 272 appears and says "* x" in Wingdings.
In the said stable, there is a trash can where a key can be found. Inside the game's files are strings of text that implicate a stable was planned to be put into the game. To access this room and avoid the Annoying Dog error screens, a hexadecimal editor needs to be used to change the "Dogcheck" value. After Gaster's Theme is concluded, the text "Thanks for your feedback! Be seeing you soon!" will be displayed and either the game will crash, or the protagonist will be put in the room with the fishing pole in Snowdin, suggesting this room was intended to be focused on Gaster. Upon playing Gaster's Theme, the other three songs are unable to be played again even if the player tries to do so. If the protagonist attempts a conversation with the NPC, it returns "* " in lowercase Wingdings, which implies that a conversation was planned here but was removed for security purposes. Exiting Room 272 leads to the Sound Test Room, where the protagonist can listen to four songs including Gaster's Theme.Īll but one of the songs can be played and switched amongst each other. Room 272 is black and has a ghostly figure in the middle of it that becomes less transparent as the protagonist approaches. However, it can also be Flowey (who follows the protagonist throughout the game), Sans, or even the fallen human. The character with the "creepy smile" is possibly the Mystery Man seen in Room 269 which may be Gaster, and the evidence supporting this theory lies within the word "smile" in the dialogue, as the track that plays in entry 17 is named mus_smile. The characters in this area mention that this corridor is a bug catching spot.Īn unknown character on the left side of the tall grass mentions that "there is somebody with a creepy smile behind you." The unseen character presumably disappears after the dialogue is triggered. Room 123 is a removed corridor with tall grass that is presumed to connect Room 99, where the bird that carries the protagonist over a disproportionately small gap is located, and Room 116, where the six-way fork in Waterfall is. Upon attempting to call someone using the Cell Phone in either of these rooms, only the message "There's no response." appears. The corridor itself becomes inaccessible once the protagonist leaves it and all values drop to 0. Once the protagonist leaves Room 269 back into Room 268, the door disappears from the corridor, though it is possible to exit the room and trigger the door's reappearance, as the fun values do not reset until the protagonist leaves the hall. The door in this hallway leads to Room 269. In this scenario, Room 268, a hallway with a gray door, appears between Room 94 and Room 95, the rooms with the crystallized cheese and Sans's telescope, respectively. This room can only be accessed when the game's "fun" value is set to 66. Unlike every other NPC, they have no collision physics, and interacting with them will cause them to react in surprise and vanish while a sound effect plays.
The figure is black and white with a distorted, cracked face. In Room 269, a figure widely believed to be Gaster can be found. Gaster does not have an officially known form, but there are several rooms and unused assets found in Waterfall that point to what he may have looked like. When exactly this happened is unknown but it's said to have been a 'long time' before Alphys was hired. He was then shattered through time and space, as one of his followers states. He fell into his own creation, generally assumed to be the Core as it is the only thing known for certain that he created. Gaster was a royal scientist before Alphys.