From the Super Mario Wiki
A Glide Guy is a Shy Guy with a parasol tied to his back found in Yoshi's Island DS. It is called a Glide Guy because in strong currents that Baby Peach can ride, they can also ride just as well, gliding. Also, it jumps and floats for a few seconds. Glide Guys come in a variety of colors, each one with a different colored parasol on its back.
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