#undertale insanity

[killzzz69]

outie soul gang! not used to seeing people who relate to outie soul problems, so that would be fun! too bad half of them are a bit too out of it

[dejink]

AU DESIGN'S 3

Here we go. The most SWEET

[frosty0ghost]

Nice guys.

[u-t-f]

This isn’t even Insanity himself it’s just me wanting to be relevant enough to have something worthwhile ;w;

[purple-outline-sphere]

Undertale: Insanity - Outta My Mind cover redraw

[par4degh0st]

I never see much for Insanity, figured I'd contribute cause I love his crazy ass

[ranchygoober]

Broken Mind: Downhill (Prototype!Insanity Sans, an Insanity*4 take)

0 - Undertale

1x - Undertale Insanity (canon)

2x - Broken Mind (mostly canon)

3x - Lord Pursues (fanon, my take on Insanity*3)

4x - Downhill (fanon, my take on Insanity *4)

5x - (no au name for this, yet. Literally just the point where it's completely just The Prototype. Fanon au/take obviously)

There is no actual long backstory for this, at least for the time being. But from what I have, I can give some key ideas for this Insanity x4 concept:

The Prototype (or Sans, in this matter) had transferred their consciousness into a jack in the box toy, fully convinced of doing so.

The Prototype had reinstalled the spider legs onto his new vessel, while also destroying his old self. He would use his old body's skull as some sort of trophy, just as Sans had done with Papyrus' own head/skull.

The Prototype is much more powerful in the state he had put himself in. He is much taller than he once was, and still has the same capabilities from the Sans from Broken Mind, just that The Prototype in this au is much more powerful now, and able to parry even more.

He would continue to make living toys, while also killing some.

[inkmuppet]

Finally got around to remaking hardmode Insanity after over a year lol. Really happy with it, The bones turned out much better then I thought they would

Created: 24/03/2026