|| Unofficial name
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|| We should dig a moat!
— Knight fish
The knight fish is a character that appears briefly in the episode "Sandy, SpongeBob, and the Worm."
He wears a typical coat of dark gray and silver armor and has a dark purple feather on his helmet.
His only line is "We should dig a moat!" when everyone is trying to save Bikini Bottom from an Alaskan Bull Worm.