Mimi lets a spelling bee victory go to her head and starts bossing her twin sister and Stanley around while practicing for a big spelling bee at school.
- Khylan Jones as Marci and Mimi
- Ariadne Meyers as Mom
- Candi Milo as Ms. Diaz
- Rene Mujica as Harry
- Charles Shaughnessy as Dennis
- Jessica D. Stone as Stanley
- Hynden Walch as Elsie
- While Marci is attempting to spell "dog", she spells it as "D-A-W-G", which is a nonstandard spelling of said word (commonly used in the phrase "Sup, dawg?").