[center][img=95899]FIxed[/img][/center] (Artist R4, color [icon]A Undyne[/icon]
Undyne is a Monster that the player meets in Waterfall. She is the captain of the Royal Guard and lives in Waterfall. She is the third boss in the game.

She initially appears as an imposing titan in a suit of menacing black and white armor. She later is revealed to be a slim fish-creature with blue scales and a long bright red ponytail. She is incredibly powerful, as shown by her ability to suplex boulders and break rocks just by punching them.

She is strong-willed and confident as a result of her training under King Asgore, and she is unmerciful to her enemies. She overzealously believes in Asgore Dreemurr and his plan to capture seven souls in order to break the barrier and escape the Underground. She has a competitive spirit, but is ultimately close with those that she considers friends. She has deep-seated respect for Asgore, and romantic feelings for Alphys who has warped her perception of human history and culture due to her only exposure through the Eight Humans and anime.