Peter Pescadero is a sixth-grade student at Wagstaff School. He has appeared in the series mainly as an extra.
He practices magic as "The Impescadaralist." Peter plays the recorder. In "Work Hard or Die Trying, Girl," he puts forward a fall-themed musical he composed for the fall musical on the instrument. Later in the episode, Peter plays Tony in the Work Hard or Die Trying, Girl musical. In "The Itty Bitty Ditty Committee," Regular Sized Rudy states Peter is in Orchestra with him and plays the recorder. Despite saying that he couldn't sing in said episode, he is shown to be a member of the Hormone-iums vocal group in "The Hormone-iums" and sings a song he and Zeke wrote promoting the Women's Issues Club in "The Quirkducers." He also played the trumpet in the My Butt Has a Fever theatrical short.
