— Sans - The Protagonist
— Froggit - The Souless/Empty One
— W.D. Gaster - The Caretaker
— Flowey - Ruins's NPC
— Temmie - Ruins's Monster
— Muffet - The Recluse
— Frisk - The Judge
— Chara - The Ambitious
— Mettaton - The Restaurant Owner
— Alphys - The Idoliser
— Whimsun - Chaotic Villager
— Asriel - Captain of the Royal Guard
— Monster Kid - The Royal Scientist
— Grillby - The Celebrity
— Napstablook - Outrageous Vender
— Asgore - The Transport
— Riverperson - The Monarch
— Undyne - The Soulless Angel/Princess
— Papyrus - The Fallen
— Toriel - The Forgotten Scientist