Mary is a teenager that appeared in "Driver's Test". Before Uncle Grandpa helped her get her license, she kept on failing her driver's test. She is voiced by Pamela Adlon.
Mary has a large pink nose, blonde hair, large lips, and wears glasses. She wears a red-orange t-shirt with a purple skirt, white socks, and black shoes.
Mary is a girl who longs for freedom and independence, but unfortunately gets nervous very easily. Her anxiousness causes her to mess up whatever she's doing, which is why she failed her driver's test the first few times. Uncle Grandpa taught her to use her nervousness to motivate her into reaching her goals.
She made a cameo in the episode "Brain Game" when Uncle Grandpa was busting out of the subway.