So basically i'll be plugging the main villain cast of trap team into the obligatory character slots, and maybe make some MIDI arrangements.
Only exception to this is Aurora taking the Human role.
Side characters and enemy encounters can just be the fodder villains. Oh and Nightshade has been reduced to Burgerpants.
So here's our cast placements.
Frisk- Aurora
Flowey- Sheep Creep
Toriel- Gulper (Theme: Stomachache)
Napstablook- Dreamcatcher (Theme: Dream Fight!)
Sans- Wolfgang(Theme: wolf./The Song That Might Play When You Fight Wolfgang/Megalogangia
Papyrus- Chompy Mage (Theme: Ha Ha HA!/Chomptrousle)
Undyne- Chef Pepper Jack (Theme: An Order Of Justice!/Battle Against The Head Chef)
Alphys- Dr. Krankcase
Mettaton (square)- Blaster Tron (Theme: Initiate Showtime Sequence/Metal Blaster)
Mettaton (sexy humanoid form)- Luminous (Theme: Death By Illumination/The Power Of NEON)
Asgore- Golden Queen (Theme: ASGOLD/Palastkönigin)
Asriel- Kaos (Theme: Hopes and DOOM/DOOM The World/Behold, His Theme!)
So yeah. Take a gander if you wish.