Main Plotline Is That Tails Has Been Experimenting With Multi-dimensonal Travel And Has Been Working

Main plotline is that Tails has been experimenting with multi-dimensonal travel and has been working on a machine that could hypothetically speaking, could send them into an alternate reality. Sonic, being used as a plot device accidentally sets the machine off, causing them to go into the undertale multiverse. As soon as the heroes arrive, they are backed into a corner by Ink and are forced to explain themselves. Ink is immediately confused. After explaning that magic and monsters do not exist in sonics reality on the same scale as they do in this one, Silver is the only one to notice that Ink's emotions are not genuine and seems to become more wary of the others actions. (Silver has trust issues because of Mephiles the dark and can also somewhat sense emotions on the mental level) They proceed to carry on with unease to meet the other members of the star sanses.

The most cursed Undertale au idea I've ever come up with: Underverse but the sonic characters are there.

Both Silver and Shadow are tormented by nightmare about the people they lost (Blaze The Cat and Maria Robotnik) leading to their eventual encounter with the Star sanses.

The Star Sanses seeing the similarities between the two teams, eventually leads to the two teaming up (not w/o some angst of course 🥲)

The bad sanses also team up with Infinite, Chaos, and Mephiles due to their overwhelming desire to cause destruction and misery.

Shitty ass nicknames for the star sanses and bad sanses + the murder time trio:

Cross: Mono (as in monochrome) and Xecuter.

Dream: Cloudy and Sunshine.

Dust: Dustbunny and Murderous chincilla.

Error: Needlemaster and Cactus.

Horror: Audrey two and Finger food.

Ink: Splat and Blotch.

Killer: Jeff and Mascara.

Nightmare (passive): Nightlight and Moonberry.

Nightmare (corrupted): Moonlight and Nightshade.

Undertale but all 17 playable charcters from tboi replace frisk (tainted and regular characters get combined into one)

Au sans pokemon teams

Ink: Smeargle, Galarian Rapidash, Ho-Oh, Alcremie (Rainbow creme), Milotic and Ambipom;

Dream: Cresselia, Musharna, Plusle, Ludicolo, Espeon, and Lucario;

Swap: Pachurisu, Escavalier, Honedge, Corvisquire, Mew and Jolteon;

Nightmare: Darkrai, Umbreon, Lucario, Gorebyss, Sharpedo and Gengar;

Dust: Cinccino, Aggron, Misdreavous, Seviper, Shedinja and Ninjask;

Killer: Bisharp, Gallade, Honedge, Loppuny, Meowstic (Male), and Meowstic (Female);

Horror: Haxorus, Guzzlord, Snorlax, Mandibuzz, Dusknoir, and Drifblim;

Cross: Zangoose, Scizor, Weavile, Honedge Zorurark and Lycanroc (Dusk form);

Error: Galvantua, Porygon z, Aquanid, Electrode, Toxicroak, and Mimikyu

I have so many OCs rn I'm not even kidding (it's only 3)

The most cursed Undertale au idea I've ever come up with: Underverse but the sonic characters are there.

Both Silver and Shadow are tormented by nightmare about the people they lost (Blaze The Cat and Maria Robotnik) leading to their eventual encounter with the Star sanses.

The Star Sanses seeing the similarities between the two teams, eventually leads to the two teaming up (not w/o some angst of course 🥲)

The bad sanses also team up with Infinite, Chaos, and Mephiles due to their overwhelming desire to cause destruction and misery.