Dr. Gaster

The rooms of the skeleton brothers Sans and Papyrus are located on the second floor of their house in Snowdin. They are radically different from each other, completely reflecting the contrasting personalities of the characters in Undertale. Papyrus's Room: The door to his room is decorated with a bone. You can get inside during a normal playthrough, provided you don't kill Papyrus. The room is very clean, bright, and tidy: Car Bed: The most prominent piece of furniture, where Papyrus sleeps wearing a racing helmet. Flame Carpet: A large rug lying in the center of the room. Bookcase: Filled with children's picture books and riddle guides. Computer: An old PC where Papyrus communicates online under the nickname COOLSKELETON95. Bones Box: A special chest for his attacks. Figurines: A collection of figurines and a huge pirate flag on the wall. Sans's Room: The door to the room is locked, with a mystical blue or rainbow glow emanating from underneath. To get inside, you need to get a key from Sans in the Last Corridor. Inside, there's complete chaos: Trash Tornado: A swirling whirlwind of dirty clothes, papers, and scraps of food in the middle of the room. Unmade Mattress: Lies right on the floor, where Sans should have been. Pile of Notes: Post-its from Papyrus demanding Sans clean up, which Sans ignores. Treadmill: A broken treadmill with a note pinned to it that says "Winner at Life." Secret Drawer: A dresser drawer where the Silver Key is hidden. It unlocks Sans's hidden workshop behind the house.

Gaster's appearance and sprite are unofficially confirmed, as his name is never tied to a specific in-game appearance. However, the gaming community associates him with the "Mystery Man" sprite, which can be encountered in a hidden room in Waterfall with a 1 in 1000 chance: He appears as a tall, skeletal figure in a black cloak. His face resembles a cracked white mask or skull with empty eye sockets. Two vertical cracks are visible on his face: one runs upward from his right eye, and the other runs downward from his left. His arms, which are often depicted separately, have round holes running through them. 📜 Character History Great Inventor: He was a brilliant scientist whose inventions provided the Underground with electricity and magical energy. Tragic Ending: According to stories from his former followers (NPC followers of Gaster), Gaster's life ended abruptly. He "fell into his own creation" (presumably the CORE). Scattered into Space: As a result of this incident, Gaster not only died, but was erased from reality and "scattered across time and space." This caused everyone in the Underground to instantly forget he existed. 👥 Connections to other characters: Sans and Papyrus: Fans have hundreds of theories about Gaster being their father or close relative. This is hinted at by their "font" names and Sans's use of a weapon called the "Gaster Blaster." But he loves his two sons (Sans and Papyrus, Sans is Papyrus' older brother, even though Sans is small and Papyrus is big, but oh well

Character Profile: A short, lazy skeleton, Papyrus' older brother. Name: Named after the Comic Sans font, which is used for all of his in-game dialogue. Appearance: Always wears an unbuttoned blue hoodie, black shorts with white stripes, and slippers. He almost never stops smiling. Role in the game: On the Pacifist Route, he acts as a friendly comedian with a penchant for puns. On the Genocide Route (if the player destroys all the monsters), Sans becomes the final boss and head judge. Combat Traits: The battle with Sans is considered one of the most difficult in modern video game history. Despite technically having only 1 HP and 1 defense, he is incredibly difficult to defeat: Evasion: He is the only monster in the game that will evade any player attacks. No Invulnerability Frames: His attacks deal damage every frame while the player is touching obstacles. Karmic Retribution: A special magic that gradually eats away at the player's health bar (poison effect). Weapons: Uses bone attacks, telekinesis (changes the soul's gravity), and Gaster Blasters—flying skulls that shoot laser beams.

Papyrus is one of the key characters in the cult game Undertale, a tall, charismatic skeleton and Sans's younger brother. He serves as the boss of the Snowdin location. His main dream is to capture a human so he can join the Royal Guard and gain universal popularity. Appearance: Face: His mouth is almost always frozen in a wide smile, and his eyes have no pupils. "Battle Body": Papyrus wears a homemade costume for a costume party, which he never takes off. Clothing: The costume consists of a white chestplate with gold trim, blue shorts, a bright red scarf, red gloves, and high red boots. Character and Personality: Optimism and Faith: Papyrus is an incredibly kind, determined, and naive monster. He truly believes that everyone is good inside, even if they do bad things. Volume: Speaks exclusively in CAPS, and his dialogue is displayed in a unique Papyrus font. Hobbies: He loves building intricate puzzles and cooking spaghetti.