Daisy is the princess of Sarasaland. She first appeared in the Game Boy title Super Mario Land, in which Mario ventures into Sarasaland to rescue her from the alien Tatanga. Following her first appearance, she wouldn't prominently appear in another game until the Nintendo 64 era, when Nintendo began to feature her as a playable character in the various Mario sports and party titles.
In contrast to Princess Peach's feminine demeanor, Daisy is a tomboy with a highly competitive spirit, but also has a sentiment for flowers. Most of her outfits and accessories are fashioned in the shape of flowers compromised of yellow, orange and turquoise colors. Daisy's appearance in her earlier post-Super Mario Land games bore a number of similarities to Peach's own appearance; she was eventually given a slight redesign with shorter hair, a rounder face, and a redesigned dress. Her current voice actress is Deanna Mustard, who also voices Baby Daisy.
Daisy is best friends with Princess Peach and is said to be Luigi's love interest much in the same way that Peach and Mario are paired together.
Baby Daisy is the infant form of Princess Daisy, making her first game appearance in Mario Kart Wii as a small-sized unlockable character. A gold statue also depicts her dancing with Baby Luigi on Daisy Circuit, and she is used as the staff ghost character on Moo Moo Meadows.
Soon after, Baby Daisy made an appearance in Mario Super Sluggers, again as an unlockable character. Although she is essentially the same as Baby Peach, it is through her dialogue with Lakitu that it was discovered he is the only character who can understand the baby equivalents of the other major characters.
Princess Daisy appears in the live-action Super Mario Bros. movie in a drastically different role. In the film, she replaces Princess Peach as the princess of the Mushroom Kingdom, but is raised in Brooklyn as an orphan after she's left at the doorstep of a church as a baby. Her only connection to her original world is a shard of the asteroid that struck Earth millions of years ago, creating an alternate dimension where dinosaurs continued to thrive and evolve into sentient humanoids. As a college student, she manages to attract the attention of Luigi, but is captured by a pair of Koopa minions and taken back to her home world. The Mario Bros. give chase and eventually rescue her, and after King Koopa is defeated, she chooses to stay behind in her true home.