Time to make an entire AU concept of a meme.
Title: Undertale - Legend of the Seven Realms
Light World (Humans):
Kris - Frisk
Asriel - Kris
Susie - Chara
Every other lightner is replaced with new human characters.
Dark World (Monsters):
Entrances - Funni pit on Mt. Ebott
Cliffs - That flower cave at the very beginning of UT
Castle Town - Toriel's Home in UT
Ralsei - Ralsei
Fountains - Human Souls
Chapter 1 (Ruins; Soul of Bravery)
All locations in DR Chapter 1 are swapped with the Ruins
Lancer - Asriel
K. Round - Final Froggit
Seam - Ruins Dummy
Rouxls - Whimsalot
King - Toriel
Jevil - Napstablook
Chapter 2 (Hotland, Soul of Justice)
Cyber Field and Cyber City - Various Floors of Hotland
Pandora Palace - MTT Resort
Queen - Sans (Sans was a scientist in Hotland at one point)
Sweet Capn' Cakes - RG01 & RG02
Addisons - Spiders from Muffet's Bake Sale
Spamton - Mettaton (Box Form)
Swatch - Burgerpants
Tasque Manager - Muffet
Spamton NEO - Mettaton EX