When your fun value reaches 66, there is a very low probability that opening a certain gray door in Waterfall will lead to a strange room where he appears. He was the former Royal Scientist and is watching everything from somewhere. If you approach him, he does nothing, and if touched, he disappears with a strange sound. Communication with him seems possible only through sign language.

Species: Monster-Skeleton ❤️: Ketchup, dad jokes, his brother, family, Grillby's 💔: Bad deeds (presumed) Abilities: Summoning & manipulating Gaster Blasters, summoning & manipulating bones, psychokinesis, teleportation HP: 1, ATK: 1, DEF: 1 Relationships: Papyrus (younger brother), Grillby (friend) Traits: Jokes often (mostly bone-related), occasionally serious, frequently says "heh." Papyrus's older brother, a regular at Grillby's. Usually has white eyes, but they turn blue & yellow when using abilities. Always calls you "kiddo" (occasionally uses your name).

Species: Monster-Skeleton ❤️: Cooking (has 0.1% talent), spaghetti, kind deeds, family, his brother 💔: Bad deeds, laziness Abilities: Summoning & manipulating large bones, summoning & manipulating small bones HP: 680, ATK: 3, DEF: 3 Relationships: Sans (older brother) Traits: Kind, pure-hearted, dreams of joining the Royal Guard, occasionally says "Nyeh heh heh!", his attacks are a bit clumsy.

Species: Monster-Dinosaur ❤️: Experiments, Mew Mew Kissy Cutie (anime character), anime, Undyne 💔: Bad deeds (presumed) Traits: Timid, low self-esteem, otaku, likes Undyne but can't express it.

Species: Monster-Goat ❤️: Children, baking pies, jokes (presumed), family 💔: Asgore Abilities: Fire & Healing Traits: Kind, gentle, divorced from Asgore, caretaker of the Ruins, Asgore's ex-wife, slightly overprotective Relationships: Asgore (ex-husband)

Species: Monster-Goat ❤️: Gardening, drinking tea 💔: Being abandoned (presumed) Abilities: Fire Relationships: Toriel (ex-wife) Weapon: Red Trident Traits: Merciful, gentle, determined, Toriel's ex-husband.

Species: Machine ❤️: Attention, himself, dancing, singing, performing 💔: Being abandoned (presumed) Traits: Killer robot, handsome, good dancer, good singer, usually just a machine.

❤️: Destruction, battle, hatred 💔: Kindness, mercy Traits: Takes the form of a yellow flower. Approaches under the guise of kindness before immediately turning hostile. Speaks with a sarcastic tone.

Species: Monster-Spider ❤️: Running her shop, spiders, pastries, cooking 💔: Grillby (rival) Traits: Has a somewhat aristocratic way of speaking. Abilities: Can produce webs to immobilize opponents.

Species: Monster-Fish ❤️: Alphys, justice, fighting 💔: Injustice Traits: Member of the Royal Guard, always full of energy, strong sense of justice, blunt with emotions, surprisingly shy, soft on close friends, tries to handle everything herself, likes Alphys but can't express it. Weapon: Spear