To choose the voice cast, Culton blindly listened to audition tapes, unknowingly picking Lawrence and Kutcher for the lead roles. Their ability to improvise significantly contributed to the creative process.
Culton made a decision about the voice cast by listening to unfiltered audition recordings, resulting in the unexpected selection of Lawrence and Kutcher for the main parts. The actors' capacity for improvisation played a significant role in shaping the project's development.