Underswap is an created by popcornpr1nce. The AU "swaps" related characters with each other (for example, Papyrus is swapped with Sans).
Underswap used to be posted on popcornpr1nce's personal blog, before popcornpr1nce and created a blog for Underswap at the address "underswapped.tumblr.com" (not underswap.tumblr.com, since that address was already taken) along with his friend @coastrobbo (referred to as "Robbo" on the blog).
Full list of swaps:
- Frisk - Chara
- Flowey - Temmie
- Toriel - Asgore
- Ruins Dummy - Mad Dummy
- Napstablook - Mettaton
- Sans - Papyrus
- Nice Cream Guy - Burgerpants
- Grillby - Muffet
- Shyren - Aaron
- Bird That Carries You Over A Disproportionately Small Gap - Onionsan
- Undyne - Alphys
- Catty and Bratty - RG01 and RG02
- Asriel - Monster Kid
- Gaster - River Person
- Catty - Bratty (initial idea, scrapping said idea)
- Mad Dummy - Gaster (initial idea, scrapping said idea)
- Jerry isn't swapped with anyone. He gets ignored.
- ↑ Wait, so 2 questions 1- you made the Underswapped au, right? 2-if so, is @underswapped just your au blog? popcornpr1nce's Tumblr
- ↑ wow dang i got a few underswap asks out of nowhere, im glad people are still so supportive but please direct all your questions and submissions to the underswap blog! @underswapped that was made especially for answering questions regarding the au, thanks for your understanding everyone! popcornprince's Tumblr
- ↑ shit someone already took the underswap url, hmm, i was thinking about making a side blog for it…….. popcornprince's Tumblr
- ↑ I'm going to guess the only difference with Bratty and Catty is that now they wear the other one's outfit Official Underswap Tumblr
- ↑ ok but lik e wHAT IF BRATTY AND CATTY WERE SWAPPED WITH THOSE TWO GAY ROYAL GUARDS Official Underswap Tumblr
- ↑ Has anyone came up with the Underswap headcanon of Royal Guard 1 and 2/Catty and Bratty swap? I could totally see it. Official Underswap Tumblr
- ↑ So Mad Dummy with Gaster and Monster Kid with Asriel? Wouldn't it make more sense the other way around? Official Underswap Tumblr
- ↑ pfft mad Gaster that's a great idea XD you just find him snoozing in the junkyard and you can either ignore or talk to him and he just gets super offended no matter what you do Official Underswap Tumblr
- ↑ Wait, so who swaps with gaster? Official Underswap Tumblr
- ↑ I think Mad Dummy would be better switched with their dummy cousin from the Ruins. Imagine: your first battle (not counting Temmie), meant to teach you to talk your problems out, but instead the dummy gets irritated and starts attacking you. Then you come across another one, and you're afraid this one will attack you too. But turns out this one just gets bored with you and leaves. Official Underswap Tumblr
- ↑ For the person who asked about swapping riverperson, I personally swap them with Gaster. Just me?
- ↑ Does Jerry get swapped? Official Underswap Tumblr