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SpongeBob's Great Grandmother
Great Grammy Ma
Aliases: Great-grammyma
Physical appearance
Gender: Female
Classification: Sponge
Children: Grandpa SquarePants, Grandpa BubbleBottom, Grandma SquarePants, or Grandma BubbleBottom
Parents: SpongeBob's Great Great Grandmother (possible mother)
Grandchildren: Harold SquarePants, Captain Blue SquarePants, and Sherm SquarePants (possible grandsons)
Margaret SquarePants (possible granddaughter)
SpongeBob SquarePants (great grandson)
Stanley S. SquarePants, Todd SquarePants, Larry, and BlackJack (possible great grandsons)
Descendants: Unnamed Great Great Great Grandson
Other relatives: Grandpa SquarePants or Grandpa BubbleBottom (possible son-in-law)
Grandma SquarePants or Grandma BubbleBottom (possible daughter-in-law)
Series information
Appearance: "Gramma's Secret Recipe" (Plankton portraying her)
List of characters

SpongeBob's Great Grandmother (possibly Great Grandma SquarePants or Great Grandma BubbleBottom), referred to as "great-grammyma," is one of four possible great grandmothers of SpongeBob SquarePants. Sheldon J. Plankton portrays her in "Gramma's Secret Recipe."


She may have been born to SpongeBob's Great Great Grandmother.

At some point she and her husband had Grandpa SquarePants, Grandpa BubbleBottom, Grandma SquarePants, or Grandma BubbleBottom.

She likely died during SpongeBob's young childhood because in "Gramma's Secret Recipe," he tells Plankton, who is pretending to be her, while tearing up, "I'm so glad you came back..."

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