Casting principal
Dexter Manning
Frisk (Voice) / Papyrus (Voice) / Mettaton (Voice) / Various (Voice)
Will Ryan
Sans (Voice) / Flowey (Voice) / Extras (Voice)
Chloe Eves
Toriel (Voice) / Extras (Voice)
Tiana Camacho
Undyne (Voice) / Extras (Voice)
AlyMew
Temmie (Voice)
Sebastian Todd
Monster Kid (Voice) / Asgore (Voice)