BlackJack SquarePants
Voice John DiMaggio
Animators Stephen Hillenburg
Species Sea Sponge
Family SpongeBob SquarePants (cousin)
Harold SquarePants (uncle)
Margaret SquarePants (aunt)
Grandpa SquarePants (grandfather)
Grandma SquarePants (grandmother)
Captain Blue SquarePants (uncle)
Todd SquarePants (cousin)
Larry SquarePants (cousin)
Sherm SquarePants (father)
Stanley S. SquarePants (half-brother)
Enemies SpongeBob SquarePants (formerly)

BlackJack Curtis SquarePants is the cousin of SpongeBob SquarePants and the main antagonist in the episode BlackJack.


BlackJack is the son of Sherm SquarePants. His klutzy and crazy half-brother is Stanley S. SquarePants.

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