Villanos (Antagonistas)
ODIO
Bete Noire
Agate Lightvale
Asriel Dreemurr
Principales
Frisk
Chara Dreemurr
Asriel Dreemurr
Mettaton
Dr. Gaster
Dr. Alphys
Undyne
Sans
Papyrus
Asgore Dreemurr
Toriel
Flowey The Flower
Secundarios
Jessica Grey
Amber Lightvale
Ronan Cass
Rave Rutrow
Isabelle
Cam
Robin
Lily
Abigail
Seth
Zachary
Hugo
Los Magos Humanos
Copper Lightvale
Agate Lightvale
Roy Goldburn
Shane Goldburn
Kody Fallenfire
Mila Rutrow
Rin Winterway
Otros
Muffet
Alina Grey
True Lab Amalgamates
Grillby
Temmie
Burgerpant
Jerry
Akumu
Kumuzilla
Criatura Rosada(s)