According to casting supervisor Jennie Monica Hammond, Hillenburg and Derek Drymon, the show's creative director, already knew that they wanted Borgnine and Conway to provide the voices when they were voice casting for Mermaid Man and Barnacle Boy.
Berdasarkan pengawas pemilihan peran Jennie Monica Hammond, Hillenburg dan Derek Drymon, sutradara kreatif acara, sudah tahu bahwa mereka ingin Borgnine dan Conway untuk memberi suara ketika mereka melakukan pemilihan suara untuk Mermaid Man dan Barnacle Boy.