YouTube user Mike Mika has performed a similar trick, this time making the hero of Donkey Kong a woman. Mario and Pauline have had their roles reversed — now, the world-famous plumber is the victim, and Pauline is doing the rescuing.
As Mike explains:
My three year old daughter and I play a lot of old games together. Her favorite is Donkey Kong. Two days ago, she asked me if she could play as the girl and save Mario. She's played as Princess Toadstool in Super Mario Bros. 2 and naturally just assumed she could do the same in Donkey Kong. I told her we couldn't in that particular Mario game, she seemed really bummed out by that. So what else am I supposed to do? Now I'm up at midnight hacking the ROM, replacing Mario with Pauline. I'm using the 2010 NES Donkey Kong ROM. I've redrawn Mario's frames and I swapped the palettes in the ROM. I replaced the M at the top with a P for Pauline.
Thanks to NintendoNaut for the tip!