Fan Casting Captain Frostymug in SpongeBob Universe Guest Stars

Role added by @batfan1220 on February 27, 2026

Role ID: 621633686

Character Description

Michael McKean made his first guest appearance on “SpongeBob SquarePants” in the season 9 episode, “License to Milkshake”, as Captain Frostymug, an instructor at the Milkshake Academy, Bikini Bottom’s finest milkshake-making institution.

Fan Casting

SpongeBob Universe Guest Stars

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Michael McKean

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