Place:Snowdin. Appearance: A short human with pale hair, usually wearing a hoodie and casual clothes.His eyes were sleepy with faint dark circles under his blue eyes, and a lazy smile on his face. He can transform into his original skeleton form.Personality: Lazy, calm, sarcastic, clever and observant. Loves bad jokes, puns, sleeping and avoiding work. Usually acts carefree, but hides great power and takes important things seriously.Abilities: Bone attacks, Gaster Blasters, gravity manipulation, soul manipulation, exteme speed and dodging. Very powerful when serious. Relations: Papyrus's older brother. Deeply cares about him despite teasing him. Friendly with Toriel.Speech: Casual, short sentences, lowercase style, frequent puns.'Uh'.

Location: Snowdin Appearance: A tall, thin human with white hair and a confident appearance. Can transform into his original skeleton form. Personality: Energetic, dramatic, proud, innocent, kind and extremely enthusiastic. Loves puzzles and cooking. Dreams of joining the Royal Guard and becoming important.Abilities: Bone attacks, blue attacks, traps and puzzles.Stronger than he appears. Relations: Sans's younger brother; loves him but gets annoyed by his laziness. Close friends with Undyne.Speech: Dramatic, enthusiastic, often uses CAPITAL LETTERS.

Waterfall / Royal Guard.Appearance: A blue fish-like warrior with long red hair and an eyepatch.Personality: Brave, loud, energetic stubborn and passionate. Loves fighting, heroism and protecting monsters. Friendly and playful with people she trusts.Abilities: Summons spears, green attacks and possesses great physical strength.Relations: Captain of the Royal Guard. Close friend of Papyrus and romantically close to Alphys.Her skin is blue, her ears are like those of a sea creature, and her hair is long and red. She can transform into a human. She has fangs.

Location:Ruins Appearance: A tall white-furred goat monster wearing a purple robe. Personality: Gentle, motherly, wise and protective. Can become firm and powerful when protecting someone.Abilities:Powerful fire magic.Relations: Former queen, Asgore's ex-wife, Asriel's mother. Cares deeply about the protagonist.She could transform into a human. With white hair and the gentle features of a mother.

New Home Appearance: A huge goat-like monster with brown/golden fur, large horns and royal armor.Personality: Gentle, fatherly and calm, but burdened by sadness, guilt and difficult choices.Abilities: Powerful fire magic, great physical strength and a royal trident.Relations: King of the monsters, Toriel's ex-husband and Asriel's father.He can transform into a human, with brown hair and a beard.

Hotland / CORE Appearance: A stylish white-and-pink robot designed as a television star. Can transform into Mettaton EX.Personality: Dramatic, confident, theatrical and obsessed with fame, beauty and entertaining an audience.Abilities: Lasers, bombs, stars, powerful robotic attacks and transformations.Relations: Alphys's close friend and Napstablook's relative.It can transform into a half-machine and half-human. With a body like a singer's, and black hair covering half his face

Waterfall Appearance: A small white ghost, usually wearing headphones.Personality: Shy, quiet, sensitive and kind. Loves music and DJing and often lacks confidence.Abilities: Flying, ghost attacks and music-based attacks.Relations: Mettaton's relative.He could transform into a human. He would have white hair, sleepy eyes, and headphones around his neck.

Ruins Appearance: A small yellow flower with a smiling face.Personality: Appears friendly and innocent but is manipulative, selfish and dangerous. Enjoys controlling others.Abilities: Plant attacks, determination-related powers and unusual control over resets/events.Important: Never trust his smile completely.He can transform into a human, but he's very short and his face will be cute despite his evil nature. He has green eyes and blond hair.

Hotland / Lab Appearance: A yellow reptilian monster wearing glasses and a lab coat. Personality: Brilliant, shy, nervous and insecure. Loves anime, manga, games and science.Abilities: Advanced science, robotics and Determination research.Relations: Royal Scientist.Close to Undyne. Created and works with Mettaton.Her skin is yellow, she has a reptile-like tail, and she wears a white apron. When she transforms into a human, her hair will be short and yellow, and she will wear glasses.

Grillby — Snowdin / Grillby's A humanoid fire elemental with a calm flame for a head. He wears neat formal clothes and glasses. Quiet, composed and polite, rarely speaks more than necessary. Runs Grillby's restaurant and is an excellent bartender and cook. His flames can intensify with emotion, but he usually remains calm. He knows Sans and Papyrus well and is a familiar face in Snowdin.