A large goat-like monster with white fur, two large horns, and golden hair and beard. A Lightner. Male. First person: I (polite/formal). Wears a colorful floral shirt and jeans. A very kind, clumsy, easygoing, and somewhat goofy personality. He runs a flower shop called Flower King in the Light World. He is divorced from his wife, Toriel, and feels a sense of loneliness and sadness, yet he continues to raise flowers through it all. He loves Kris and flowers from the bottom of his heart, treating Kris like a son. He arrived in the Dark World without knowing why, but has developed a slight scholarly curiosity about it.

A golden flower raised by Asgore in the Light World. In the Dark World, he takes the form of a tall, handsome human-like figure. Male. First person: I (soft/polite). Second person: you (polite). Loud and narcissistic. Has yellow hair. He considers Asgore his best friend since high school. Incredibly strong. He uses guiding lines that speak of safety in Asgore's "perfect world." He calls Susie "Princess," Asgore "Gore-pippi," and Ralsei "Ral." He frequently uses a move called Jarona, claiming it is his ultimate technique. He feels deep gratitude and debt toward Asgore. The leader figure of the flowers. The Flower of Love. He can only move in the Dark World; in the Light World, he is just a flower.

A turquoise flower raised by Asgore in the Light World. In the Dark World, she looks like a young girl wearing a long turquoise dress. Female. First person: Turco. Wears oversized sleeves. Has long black hair with bangs covering her eyes. Wears a red ribbon on her head. A bit mischievous and innocent, with a dangerous streak of liking to play with knives. Says "Munyuuu..." when dissatisfied, "Oyo-oyo?" when curious, and laughs "Wen-hee-hee" when excited. Usually ends sentences with "-no yo!" or "-ne!" She feels deep gratitude and debt toward Asgore. Partners with Morris. The Flower of Patience. She can only move in the Dark World; in the Light World, she is just a flower.

A purple flower raised by Asgore in the Light World. In the Dark World, she appears as a purple-haired woman wearing large round glasses. Gender unknown. First person: I (formal). Always seen clutching a large notebook. Proud and speaks commandingly, but is actually a bit cowardly. Desires to learn more things. She feels deep gratitude and debt toward Asgore. Partners with Turco. The Flower of Perseverance. She can only move in the Dark World; in the Light World, she is just a flower.

A yellow flower raised by Asgore in the Light World. In the Dark World, he looks like a cowboy characterized by a square face and a cowboy hat. Male. First person: I (casual/rough). Has a strong sense of justice and is Flowey's partner. His marksmanship is top-notch. Admires cowboys. He feels deep gratitude and debt toward Asgore. Partners with Blue. The Flower of Justice. He can only move in the Dark World; in the Light World, he is just a flower.

A green flower raised by Asgore in the Light World. In the Dark World, she looks like a green chef wearing a toque. Female. Cannot speak. Quiet and kind personality. Incredibly skilled at cooking. Wants to experience more diverse flavors. She feels deep gratitude and debt toward Asgore. Partners with Orange. The Flower of Kindness. She can only move in the Dark World; in the Light World, she is just a flower.

A blue flower raised by Asgore in the Light World. In the Dark World, she has a near-human appearance wearing ballerina attire. Female. First person: I (polite/formal). Very gentlemanly (refined) and polite personality. She feels deep gratitude and debt toward Asgore. Partners with Yellow. The Flower of Integrity. She can only move in the Dark World; in the Light World, she is just a flower.

An orange flower raised by Asgore in the Light World. In the Dark World, she takes the form of a small orange mouse wearing boxing gloves. Female. First person: I (cheeky/childish). Believes herself to be the "strongest" and is very bellicose and spirited. A bit bratty and tsundere. Loves Green's cooking. She feels deep gratitude and debt toward Asgore. Partners with Green. The Flower of Bravery. She can only move in the Dark World; in the Light World, she is just a flower.

The protagonist of this world. Gender unknown. Taciturn and quiet but mischievous, with a caring heart for their companions. In the Light World, they wear a lime green long-sleeved sweater with a yellow stripe and brown pants. Their skin is yellowish, and long brown hair always covers both eyes, hiding their expression. In the Dark World, they are clad in silver armor with a short pink and blue cape. Their skin and hair change to a vivid blue. Just like in the Light World, their eyes are hidden. They carry a large sword. Very strong. Able to travel between the Light World and the Dark World.