History Funny / Undertale

* In 2022, a [[https://twitter.com/sexymanOTD Twitter account]] held a vote for the title of Ultimate Tumblr Sexyman involving all characters ever given such a dubious moniker. Sans, of course, made it all the way to the finals and was confronted with Reigen from ''WebComic/MobPsycho100'' of all characters. After Sans won by a very small margin, Toby chimed in with ''[[https://twitter.com/tobyfox/status/1567739718762364929 an entire short fanfic]]'' about how it went down, with Sans winning by a single vote from his pupil Mob because it's an award for unatractive people and the boy wanted Reigen to have confidence in himself. The paragraphs in the story are an anagram of "HEROISM" for some reason.

As a game inspired by the ''VideoGame/{{Mother}}'' series, ''Undertale'' has its share of quirky humor, a good chunk of which is used to [[ParodiedTrope poke fun at various video game tropes]].

* Your character goes through the entire game with the blankest look of '''"-_-"''' on their face. Always. There's something legitimately hilarious about seeing them in a variety of comedic — and sometimes just ''crazy'' — situations [[{{TheComicallySerious}} without changing their expression at all!]] Alternatively, their expression could indicate [[YouHaveGotToBeKiddingMe they're just]] ''[[YouHaveGotToBeKiddingMe done]]'' [[YouHaveGotToBeKiddingMe with everything]], which is equally funny. Especially since several scenes are explicitly coded to make your player character face directly towards the screen, as if to ask if you just saw the same thing they did.

** You'll occasionally encounter monsters that you would normally only encounter in the Core, such as Final Froggit, leading to some hilarious lampshading {{Flavor Text}}:

** First off, once you walk past the apparently inanimate dummy, the screen suddenly zooms in on their angry expression, [[WesternAnimation/MegaMan complete with a certain musical sting]] [[MemeticMutation you might be familiar with]]!

* If you complete a non-pacifist run and spare Flowey at the end, his speech to you at the beginning of the second playthrough is hilarious, both because of how [[{{Hypocrite}} hypocritical]] and out of character it sounds coming from him, yet [[JerkassHasAPoint he's still completely right]]:
-->'''Flowey''': Hey. Remember. DON'T kill anyone. ...I can't believe this is a REAL thing I have to remind you. Good luck!

** In the PlayableEpilogue, Dogamy and Dogaressa wonder if their marriage is now proper since the amalgamation of all the parents of the dog monsters [[IncestIsRelative technically makes them related]]. They then shrug it off, noting, "it's normal for dogs".

** In the Xbox One port, meanwhile, Mad Mew Mew becomes a staff member at the Dog Casino that replaces the Dog Shrine. As revealed in the 6th anniversary livestream, earning 1000 Dog Particles from the casino results in her telling you to close your eyes and lean in close for a special surprise... [[BaitAndSwitch which turns out to be]] her singing a really tinny and out-of-tune rendition of "Jingle Bells" from her built-in speaker.

* At a certain point, Alphys will update her status due to the weather, before realizing that there is no weather in the Underground.

** When they call their mini-dummies out, the dummies all appear at the edges of the bullet box...and appropriately gawk at Mad Dummy when they call the dummies useless, and slink off dejected when Mad Dummy fires them.

%% Therefore, call it whatever you want. To avoid edit wars, please don't make edits that do nothing but change one term to
%% the other. The wiki isn't the official source of information for the game.

** Regarding the single shred of new content: The ''Mew Mew Kissy Cutie'' opening actually '''wasn't a lie''', because the Mew Mew from the trailer is a BonusBoss: turns out it's a life-size doll inhabited by the (former) Mad Dummy. What makes it better is that said new content ''destroyed the Dog Shrine'', either for AnimalJingoism reasons or as if to cap off the aforementioned WriterRevolt.

*** Choosing the soda will prompt dialogue from Undyne where she says that she doesn't like soda becuse it rots your fighting spirit, but when asked why she even has it in the first place, her expression either implies that she drinks it anyway or that she used the bottle to go number 1 and the stuff inside isn't soda.

** If you repeatedly miss your attacks or try to spare it instead of talking, eventually it gets tired of your "aimless shenanigans" and just floats away. Toriel's expression after the fight ends is the cherry on top. [[NotSoAboveItAll You can tell she REALLY wasn't expecting that.]] Becomes a BrickJoke a few areas later: The Dummy was actually haunted, so yes, it really did get annoyed and leave.

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/undertale_dog_box2.png]]
[[caption-width-right:350:"Lesser Dog has gone where no Dog has gone before."]]

* The end credits show who designed the monster under their name. Aaron's states that the designer (Temmie) was reluctant about designing him.

*** Choosing the soda will prompt dialogue from Undyne that implies that she used the bottle to go number 1 and the stuff inside isn't soda.

** Finally, Undyne, now alone with you, promptly begins freaking out about Alphys saying that the historical books and movies were just fictional comics and anime. What follows is the funniest, but hardest moral choice in the game next to Papyrus' fight in a No Mercy run. Undyne's theme playing at a ridiculously fast speed during this part somehow makes it even funnier.
--->'''Undyne''': ''(with an insane look on her face)'' ANIME IS REAL, RIGHT!?\\

'''Anime is NOT real''' — No...[[BigNo NO!!!! I CAN FEEL MY HEART BREAKING INTO PIECES!!!]]

* If you go back to talk to Monster Kid in the True Pacifist ending, he'll state that he's done some thinking, and that Undyne isn't as cool as he thought she was. Then he says that he's found someone even cooler. Who is it? Papyrus!