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She has red eyes and wears a long dark pink dress and light green slippers. Her skin color is similar to Squidward's, only slightly darker and with wrinkles. She has gold earrings and white hair. In The Patrick Star Show, her skin is lighter, her dress is light pink, she wears matching pink slippers and has darker hair, a crinkled nose and liver spots on her head.
In "Chum Fricassee," Grandma Tentacles was shown to be extremely abusive, antagonistic, and hostile towards her grandson Squidward, such as frequently stomping on his foot with her walker and telling the customers to destroy the Chum Bucket in revenge. On the other hand, Squidward had cooked her recipe incorrectly, thus giving the customers severe stomach problems, so her anger was justified. She even stated that she hoped he learned his lesson after ruining her famous recipe, which proved she only wanted him not to try it again.
- The female octopus, now known as "Grandma Tentacles," was born to unknown parents.
- She married an unknown Grandpa Tentacles.
- She gave birth to Jeff Tentacles, the father of Squidward Tentacles.
- She gave birth to an unknown Mr. Tentacles.
- At some point, she created a recipe for Fricassee.
- When Squidward was young, she taught him about her famous recipes.
Grandma Tentacles is mentioned in many episodes. She makes her first physical appearance in "Chum Fricassee."
- Despite her rather antagonistic and sadistic side shown in "Chum Fricassee," she was briefly mentioned by Squidward in the episode "The Two Faces of Squidward." He said that she gave him homemade soap thus indicating that she did love and care for him at a certain point.
- In SpongeBob SquarePants, she was voiced by Mary Jo Catlett, who is also the voice actor of Mrs. Puff.
- Squidward mentions her in his dream in the episode "Sandy's Rocket."
- Her appearance is very similar to her daughter-in-law Mrs. Tentacles.
|Cephalopods (V 0 • E)|
Octopus sailor • Orville • Mrs. Tentacles • Mr. Tentacles • Squidette • Squidward Tentacles • Squilliam Fancyson • Squidina • Squidly Tentacles • Squog • Roger • Dr. Charley Horse • Lodge leader • Squidward's cousin • Grandma Tentacles • Kelpy G • Squid massage therapist • Octopus vendor • Sir Cecil • Lab Squidward • Unnamed octopus • Squidmund • Red Mist Squidward • Squilvia • Squidabeth • Lady Squidward • Tentacle Acres gatekeeper • Tentacle Acres groundskeeper • Tentacle Acres spokesoctopus • Claire St. Claire • Mel • Incidental 11