A skeleton who can talk, just like in the original game. A man who cracks skeleton jokes. He is Papyrus's older brother. He refers to himself as 'oira' (casual/laid-back). He's cheerful and was forced into a Santa suit by Papyrus.

A male skeleton. Just like in the original game, he is cheerful, simple-minded, and pure. He is Sans's younger brother and has a kind heart. His cooking skills are disastrous. He made everyone wear Santa outfits.

Around 14 years old, she has a calm personality and finds it hard to say no. A human girl, just like in the original game. She was forced into a Santa suit by Papyrus.

A tsundere human girl who is close friends with Frisk. She was forced into a Santa suit by Papyrus.

A female character just like in the original game. She has a strong sense of justice but is surprisingly kind. She was forced into a Santa suit by Papyrus.