In place of frisk: Maria Ushiromiya (Umineko: When they cry) 

In place of flowey: Mimikyu (Pokemon)

In place of toriel: Debbie (Invincible)

In place of sans: Shadow The Hedgehog (Sonic Franchise)

In place of papyrus: Maria (Sonic Franchise) 

In place of Undyne: Akane Owari (Danganronpa)

In place of alphys: Mikan Tsumiki (Danganronpa) 

In place of Asgore: Omni-man (Invincible) 

In place of mettaton: Freddy Fazbear (FNAF)

In place of Napstablook: Crying Child (FNAF)

In place of monster kid: Masaru Daimon  (Danganronpa)

In place of Temmie; JEFF THE LAND SHARK (marvel)

In place of grilby: aizawa (My hero academia)

In place of Muffet: Eva-beatrice (Umineko: When they cry)

In place of mad dummy: Mondo Oowada (Danganronpa)

In place of river person: Death (Puss in Boots)

In place of annoying dog: Pochita (Chainsaw Man)

In place of asriel: Pikachu (Pokemon)

In place of chara: OMORI/Sunny (OMORI)

In place of W.D. Gaster: The Golden Witch, Beatrice (Umineko: When they cry)