Unlike the other characters, Frieda is a foot puppet instead of a hand. Being a foot, Frieda's favorite things are soccer and dressing up in fancy shoes. Whenever she says something, her toes move up and down to give the impression that she's talking.
She likes to hang out at the park, which is where she first met Oobi. Despite looking completely different from each other, Oobi and Frieda are very good friends, and Oobi likes her a lot. Since they're nothing alike, Oobi and Frieda sometimes run into problems when they try to play together. They always end up finding a compromise that allows both of them to play at the same time, like turning a game of catch into "kick-catch."
Cheryl Blaylock was offered the role of Frieda in 2003. She knew the creator of Oobi, Josh Selig, from his time on Sesame Street and immediately accepted. For episodes featuring Frieda, the crew had to construct a new set that allowed Cheryl to raise her foot alongside the hand puppets. To do this, they assembled a ramp-like stage with a chair connected to it, resting on its side. Cheryl was able to lie down in the chair and rest her leg on the ramp, making her foot appear to be standing at the same height as Oobi.
In 2012, Cheryl was interviewed by the website Old School Lane and described her experience on Oobi:
Frieda is an upside-down foot. In season one, she has light green eyes and wears a blue barrette on her toe. In season two, she has darker blue-colored eyes and wears a bright pink flower-shaped pin on her toe.