Undyne is a badass woman who can flex a rock for no reason!
by Undertale Flowey December 25, 2015
Get the undyne mug.
A lesbian warrior fish from a game called Undertale.
by MrDeppresst November 14, 2018
Get the undyne mug.
Species: Fish
The captain of the Royal Guard in the indie game, UnderTale.
Is lesbian and has a crush on the Royal Scientist Alphys.

SPOILER ALERT!
Fights with spears. Her goals are to take your soul and to set the monsters free.
Extremely powerful, can change your soul into a Green color, giving you a spear to block her own attacks.

Will transform into Undyne the Undying on a Genocide Route.
I, Undyne, will strike you down!
by Professor Atomix March 21, 2021
Get the Undyne mug.
A fish with a spear that appeared in 2015's Undertale. He can be encountered in Waterfall.

Also its a she and she burned her house down just to teach frisk how to cook a spaghetti
Undyne:SCREW IT!WHY SHOULD I TELL THAT STORYWHEN YOU'RE ABOUT TO DIE!?!NGAAAAAHHHHHHHHHHHHHHHHH!

Undyne is a fish boi... with a spear
Get the Undyne mug.
A badass that will kill you make you rage and brake your computer
Mom I broke my screen fighting undyne the undying
by Undertalethebest August 13, 2017
Get the undyne the undying mug.