Mary is a student at Pokey Oaks Kindergarten. She appeared in the episode Mojo Jonesin', and wanted to have superpowers. She is voiced by Jennifer Hale. She also appears in Get Back Jojo (where she is impersonated by Mojo Jojo) and Ice Sore.
Mary is an overweight girl with glasses and dirty blonde hair tied back in a low ponytail. She wears a pink dress with red flowers on it.