Not to be confused with Guard worm.
Not to be confused with JK.
Unofficial name

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BlackJack's guard worm is a guard worm who appears in the episode "BlackJack." He is owned by BlackJack.


BlackJack's guard worm is a typical, big light green worm who has light red eyes with black pupils and sharp, light yellow teeth. He wears a spiky metal collar attached to a chain.

Role in episode

When SpongeBob walks up to BlackJack's house so he can save his parents and approaches the door, the guard worm reaches out from a rusty boat in the backyard. He barks at SpongeBob, who is easily frightened.


  • He can be seen as a foil to Gary, much like Blackjack is a foil to SpongeBob.
Worms (VE)

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