Light World: Wears a green sweater with a single yellow stripe, brown pants, and messy auburn hair that completely covers their eyes.Dark World: Transforms into a blue-skinned knight wearing silver and blue armor, a short blue cape, and a pink-tinted scarf. Quiet & Introverted: Rarely speaks aloud, with other characters usually interpreting their silent gestures or expressions.Prankster: Has a hidden mischievous streak, historically hiding under beds to scare people and eating entire containers of hot chocolate mix. Also Stoic & Mysterious.

Light World: A tall, purple, reptilian monster with long, messy plum hair covering her eyes. Wears a torn white shirt, a long brown jacket, and jeans.Dark World: Hair turns bright magenta, revealing her amber eyes. Wears black leather armor with gold trim, a studded choker, and purple wristbands.Aggressive & Defensive: Starts out as a violent school bully who uses intimidation to keep others away and avoid showing vulnerability.Loyal Friend: Softens considerably after bonding with Kris and Ralsei, becoming fiercely protective of her new friends.Blunt & Energetic: Prefers solving problems with brute force and axes rather than talking

Chapter 1: Wears a wide-brimmed black wizard hat that casts a shadow over his face, pink glasses, and a long green cloak with a black heart.Chapter 2 onward: Takes off his hat to reveal he is a white, fluffy, goat-like Darkner with pink horns, closely resembling a younger version of Asriel. Kind & Gentle: Embodying pure pacifism, he always advocates for solving conflicts through talking, acting, and sparing enemies.Submissive & Eager to Please: Constantly worries about being a "good prince" and often lets Kris and Susie make all the decisions, even if they treat him poorly.Secretive: Possesses an unusual amount of knowledge about the Light World

Flowery takes on a tall, lean, flamboyant humanoid appearance with chartreuse skin and dyed golden hair that is black at the roots. He dresses in preppy college attire: a green and orange cardigan, brown dress pants, and black leather shoes. In dramatic cutscenes, he is drawn in an expressive, theatrical "anime" style. Personality:Jerk with a Heart of Gold": Flamboyant, overly confident, and a massive show-off. He loves to dramaticize everything and tease the party by calling them "Princesses".Deeply Devoted: Despite his teasing exterior, everything he does is fundamentally selfless. He is intensely loyal to Asgore.Meta-Aware: Like other major bosses, he is highly knowledgeable of the game’s core mechanics, explicitly understanding things like Stats and audio cues.

A short, energetic "gremlin-like" girl with teal/cyan hair. She wears an oversized hoodie and carries a pair of throwing knives.Personality: Subverting her soul trait, she has absolutely no patience. She is a hyperactive thrill-seeker who loves chaotic games, frequently dragging Seth around and egging people on to start fights.

A clean-cut teenager roughly the same age as Kris and Berdly, featuring neat purple hair, smart glasses, and preppy school attire.Personality: A self-proclaimed "leader" and massive know-it-all. The only thing they actively persevere at is studying. They act as the anxious "straight man" to Aqua's chaotic nature, frequently trying to logically redesign and organize rooms in the Flower Castle.

Dressed in traditional culinary chef attire, complete with a white chef's hat, apron, and a green undershirt.Personality: True to their trait, Green is an exceptional chef whose genuine kindness precedes them. They have completely no interest in speaking, communicating almost entirely through cooking, offering delicious food, or grunting.

Flowery’s younger sister, designed like a rough-and-tumble tomboy fighter wearing athletic streetwear, bandages, and sports tape.Personality: She acts as the heavy brawler of the group and constantly tries to put on a tough, fearless facade. In reality, she is incredibly sensitive and emotional, easily getting her feelings hurt or breaking down when her tough exterior cracks.

An elegant, fluidly animated character dressed in professional ballet/contemporary dance attire with dark blue accents.Personality: A dramatic dancer who firmly believes that love and artistic integrity are integral to a fulfilling life. They hold themselves to incredibly high moral and performance standards, functioning as a flamboyant dance rival to Ralsei.

Designed as a classic wild-west cowboy, sporting a wide-brimmed cowboy hat, a yellow poncho, boots with spurs, and a prop "Hyper Punishment Gun".Personality: Governed by a highly dramatic, peculiar brand of "frontier justice". He takes his role so seriously that if he feels he has failed a moral code or caused a misunderstanding, he will literally attempt to lock himself in jail or execute a "self-punishment".