Stella is a construction worker on Sesame Street, who worked with Biff and Sully during season 22. Vocally, she is between the talkative Biff and the silent Sully, as she only ever speaks one word - "Yo!"
She first appears in Episode 2791, hired by Biff to help hang Mr. Handford's framed first dollar on the wall of Hooper's Store. She appeared the other episodes during the week long saga, excluding Episode 2794. Stella joined the duo for another Hooper's Store job later in the season in Episode 2870.
She made her final appearance in Episode 2874 as a percussionist for "This Song Is for the Birds," drumming on Sully's helmet at certain moments in the song. Her musical talents are heard on the We Are All Earthlings and Silly Songs albums.