Undyne

Undyne
"HAHA! it's my LUCKY DAY!!! GIMME YER SOUL!!" -Undyne

Undyne is a fish-like monster, and the third boss in the popular game, Undertale.

She first meets Mario when she bursts into Napstablook's house due to the horrible music Mario was playing to get it to stop, but after she sees Mario, she enters battle with him. Mario jumps on her head, but only does 1 damage. He summons a teletubbie to help, but it goes mad and chases both him and Undyne in a tank. Undyne appears at the end stating that she's still going to take Mario's soul, but Asgore stops her saying Mario probably doesn't even HAVE a soul.

Appearances
-Mariotale - If Mario was in...Undertale