A darkened, pale pink yo-kai with big blue eyes, messy yellow hair pulled up into pigtails and is shown making a winking expression. Her outfit is a white and blue split top with two dark raspberry stripes on the left side to match her bracelets, while her skirt is solid white with blue coloring in the pleats, similar to a cheerleader's uniform. On her hands, she has green pom-poms.
Ashitagirl is very upbeat and loves to cheer someone. She can also charm male Yo-kai.
Ashitagirl has the ability to make somebody cheer on another person or cheer them up.
Ashitagirl debuted in EP139, where she was inspiriting Katie on the school soccer field. Nate summoned K'mon-K'mon to deal with her, but instead inspirited the soccer coach and the soccer game began. After K'mon-K'mon was outsmarted by Ashitagirl, Nate felt downhearted and defeated. Later that night, Nate's dad cheered him up with the help of Ashitagirl.
In episode 166, Nate summoned Ashitagirl to help Damajor.