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“Ugh... I forgot the elevator was scheduled to be seviced right now! What a pain.”
Muffy is a teenager resident from the second floor of Flipside in Super Paper Mario. She is a trendy, care-free and optimistic girl. Her motto, "Life should be short and sweet, babe!" greatly supports this. After the player defeats the final boss, she says when the world was ending, she spent all of her hard earned coins at the Flipside Arcade, and while she did rack up a number of high scores (300,000 in Forget Me Not, 400,000 in Tilt Island, and 500,000 in Hammer Whacker), she was left broke. She, however, deals with it easily and simply says "Easy come easy go!" Muffy then desires to be a Flipside tour guide and promises that she will be the best one ever.
Muffy's Flopside counterpart is Lucy. However, in the PAL region, Muffy herself is named "Lucy", while her counterpart is called Lacy due to the fact that "muff" is another word for female genitalia in England. Despite her name change, the Flipside Arcade still uses "MFFY" as the name in the high scores.