Pesky Dust is a short, fairy-like alien with blue skin. He has purple fairy-like wings and blue hair that sticks straight up. He has three-fingered hands and white gloves, and his feet have two toes on them. His eyes are green with feminine eyelashes, pinks markings on his cheeks and chin, and he wears a green dress-like outfit with black zigzags. The Omnitrix symbol is on his chest.
According to Derrick, Pesky Dust has little to no powers while the Omnitrix is malfunctioning. However, he, Walkatrout, Molestache, and The Worst definitely do have powers when the Omnitrix is functioning properly, although these powers may not be very practical.
According to Derrick J. Wyatt, Pesky Dust has abilities similar to that of Jigglypuff from Pokemon.
Pesky Dust was unlocked by Driba and Blukic, along with Walkatrout, Molestache, and The Worst.
Pesky Dust's name is a play on the words "pesky" and "pixie dust".