Hayzee is a Crazee Dayzee with green petals, whom Luigi meets while on his quest to assemble the Marvelous Compass, during Paper Mario: The Thousand-Year Door.
Hayzee lives in Jazzafrazz Town, where she is writing a play for the annual Jazzafrazz Town Drama Slam. As it turned out, the compass piece that Luigi needs in part of the Dramalala Plaque, the prize for winning the contest. So, Luigi agrees to help Hayzee, playing the part of ‘Grass’ in her play.
In the end, they win and Hayzee joins Luigi in his quest.