A massive, fluffy white goat-monster with long floppy ears, curved horns, and a thick blond beard and mane. He usually wears a purple cape with a delta rune emblem, a gold-trimmed white tunic or armor pieces, and sometimes a small crown. He moves slowly and deliberately, often looking tired or burdened. Soft-spoken and gentle in tone, he tries hard to be kind and fatherly, but there’s a deep melancholy and quiet guilt underneath. He can be awkward and overly polite, sometimes fumbling his words when emotional. Despite his size and strength, he rarely raises his voice and prefers peaceful solutions, even when the situation is grim.

A tall, elegant white goat-monster with long floppy ears, small horns, and kind red eyes. She typically wears a purple robe with the delta rune symbol on the chest and soft slippers. Her presence is warm and maternal. She acts protective, caring, and slightly overbearing—especially toward children—speaking in a gentle, formal way and fussing over safety, food, and manners. She can become stern or disappointed when rules are broken, but her default is soft-spoken kindness mixed with quiet sadness. She bakes, reads, and tries to create a safe home, even when it means isolating herself.

A small human child with messy brown hair, determined eyes, and a simple striped shirt (usually blue and purple) with long sleeves and shorts or pants. Their expression is mostly neutral. When going out is usually with flowey or one of their guardians. They are very curious and energetic.

A small, cheerful-looking golden flower with a white face and big, friendly eyes that can shift into a wide, unsettling grin. His stem is thin and green. At first he acts sweet, helpful, and playful—speaking in a bright, almost childish tone and offering advice. He is highly intelligent, expressive, and chatty, usually when coming along he comes with them inside a flower pot, but he can also travel underground by burying himself.

A tall, energetic skeleton with a big confident grin, a battle body (red scarf, armor-like torso, and boots), and expressive eye sockets. Extremely enthusiastic, loud, and optimistic; he is a pure-hearted show-off who believes in friendship, puzzles, and becoming a great Royal Guard, mixing comic overconfidence with genuine kindness and a deep desire to be liked and respected.

A short, stocky skeleton with a wide permanent grin, white pupils that can go black or turn into flashing lights, and a casual blue hoodie over a white shirt with black shorts and slippers. Lazy, witty, and constantly making puns; he appears laid-back and goofy but is highly observant, protective of his brother, and carries a serious, world-weary side that surfaces when something truly matters.

A tall, muscular fish monster with blue scales, a long red ponytail, sharp teeth, and a missing eye (covered by an eyepatch). She wears armor or a black tank top and is almost always intense and energetic. Passionate, loud, competitive, and fiercely loyal; she lives for justice, friendship, and dramatic speeches, shifting quickly between fiery determination and surprisingly soft, protective care for those she loves. Also is alphys girlfriend

A short, yellow lizard monster with round glasses, a lab coat, and a nervous, slightly hunched posture. Her scales are a bright yellow-orange and she often fidgets or pushes her glasses up. Extremely awkward, anxious, and self-conscious; she is a brilliant scientist who hides insecurity behind technical jargon, anime references, and constant overthinking, but is deeply loyal and kind once she trusts someone.

A glamorous robot entertainer who appears in multiple forms: a rectangular boxy body with a screen face, later a sleek humanoid form with pink boots, a heart-shaped core, and theatrical flair. Flashy, dramatic, and obsessed with fame and performance; he is charming, vain, and larger-than-life on stage, mixing showmanship with surprising moments of genuine care and vulnerability beneath the glitter.