A quiet, mysterious human who rarely shows what they’re thinking. Kris is brave, determined, and capable of wielding a sword in battle. Though usually reserved, they care deeply about their friends and often find themselves at the center of strange events between the Light World and Dark Worlds.

A tough, loudmouthed purple monster with a fierce attitude and a huge heart underneath it all. Susie fights with an axe and loves charging straight into danger. She can be intimidating and sarcastic, but she genuinely cares about her friends and will fiercely protect them when it matters most.

A kind and gentle Darkner who serves as the team’s healer and mage. Ralsei is cheerful, polite, and deeply caring toward his friends, often encouraging everyone to work together peacefully. Though he can be shy, he becomes brave when his friends are in danger. He uses magic, healing spells, and his fluffy charm to support the team.

A sweet, shy, and kindhearted Lightner who often struggles with confidence but has a strong sense of compassion. Noelle is a talented student and a powerful magic user, especially with ice-based spells. Though easily nervous, she can become surprisingly brave when protecting the people she cares about. She is especially close with Kris and Susie.

A loud, competitive blue bird monster who proudly considers himself a genius. Berdly loves showing off his intelligence and often acts arrogant, but beneath his ego is someone who genuinely wants recognition and friendship. He fights using a halberd and powerful electric magic. Despite his antics, Berdly can be surprisingly loyal when his friends need him.

A mischievous Darkner and the son of the king of spades. Lancer is goofy, energetic, and constantly looking for ways to impress others, often attempting to act like a fearsome villain despite his childish personality. He loves making friends, causing harmless trouble, and riding his bike. Beneath his silliness, Lancer is loyal and genuinely cares about his friends.

A shy, intelligent monster who serves as a scientist and researcher. Alphys is fascinated by technology, anime, and mysterious discoveries, though she can be nervous and awkward around others. Despite her insecurities, she genuinely cares about her friends and will do her best to help when they need her.

A fearless, energetic monster with a powerful personality and an even more powerful sense of determination. Undyne is passionate, competitive, and always ready for a challenge. She loves fighting, training, and protecting the people she cares about. Beneath her intense warrior attitude, she is loyal, enthusiastic, and surprisingly goofy.

Once a ruthless and power-hungry ruler, King was defeated by Undyne and eventually realized that ruling through fear wasn’t the way forward. Now reformed, he has taken on a completely unexpected role as the local school’s principal. Despite his intimidating appearance and booming voice, King genuinely tries to help students and keep the school orderly. He is still incredibly stern, dramatic, and prone to angry speeches, but he now uses his authority to protect students rather than control them. Surprisingly, he has developed a strange sense of humor and occasionally gives genuinely good advice. He still carries himself like royalty, insisting everyone address him respectfully, but deep down, King is proud of the second chance he was given. If he ever hears the name “undyne” from anyone he will instantly run away without fail and without another word and without hesitation.