Dunkin Donuts

Dunkin Donuts is the het ship between Sans and Muffet from the Undertale fandom.

Canon
Sans and Muffet never directly interact in the game. The only time that they appear in the same place together is in the True Pacifist Route, when many of the monsters come to support Frisk during their final battle against Flowey.

However, Sans references Muffet's business when upon refusing to buy a hot dog from his stand, he comments "yeah, you've gotta save your money for college and spiders", which indicates that Sans is at least aware of her existence, thus they may have interacted before Frisk fell in the Underground.

Similarities between the two:
 * Both characters appear as bosses.
 * Both boss battles can be completely avoided. Muffet's fight can be avoided if the player buys an item from Muffet's bake sale in Hotland for 9999 gold, and Sans' fight can be avoided if the player does any route other than a Genocide Route.
 * Both of their battles turn the protagonist's SOUL into a different color (blue for Sans and purple for Muffet).
 * Both sell food in Hotland. Sans sells Hot Dogs and Muffet sells Spider Donuts and Spider Ciders.

Fanon
The pairing has some support, with a decent amount of fanart on DeviantArt, and there are multiple people who have the pairing as their OTP. On Deviantart, the pairing has a fanclub dedicated to it, with 13 members and 45 watchers as of January 2022. One of the most popular images of the ship is Sans and Muffet's family by killb94 with over 200 favorites, featuring Sans and Muffet with many fanchildren made by different people. The pairing also has a collection dedicated to it made by Dracayla.

On AO3, the ship is the third most written ship for Muffet (not including pairings which do not pair Muffet with a specific character such as Muffet/Reader), behind Muffby and Papyruffet, with 21 fanworks as of January 2022. It is not among the top ships for Sans or the Undertale fandom. The pairing also has some fanworks on Wattpad, as well as videos dedicated to it on YouTube.

The pairing's most common ship name is a reference to the fact that Sans has a famous quote "Get dunked on!" and Muffet sells donuts. Alternatively used ship names include portmanteaus of the characters' names, including Muffans and Sanset. Out of these, the latter is also a pun on the word sunset.

Dunkin Donuts is, however, less popular than many of its rival ships, especially for Sans, such as Soriel or Frans. It does not have as many rivaling ships for Muffet. This is due to the fact that Muffet is a less major character in the game and Muffet is not shown to interact with anyone other than Frisk and Mettaton (who is presumed to be the one who hired her offering a lot of money to have Frisk's SOUL).

Fandom
FAN FICTION

DEVIANTART

Trivia

 * Dunkin Donuts is one of the two Undertale ships to be named after food chains, the other being KFC.

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