|Family||Freddi Fish (granddaughter)|
|Game(s)||Freddi Fish and the Case of the Missing Kelp Seeds|
Freddi Fish 3: The Case of the Stolen Conch Shell
Freddi Fish 5: The Case of the Creature of Coral Cove
Grandma Grouper is a character in the Freddi Fish series. She is Freddi's loving and caring grandmother, and only appears "in person" in Freddi Fish and the Case of the Missing Kelp Seeds and at the beginning of Freddi Fish 5: The Case of the Creature of Coral Cove. She also appears in Freddi Fish 3: The Case of the Stolen Conch Shell as a model for a fortune-telling device. It is unknown whether she's Freddi or Luther's maternal or paternal grandmother.
At the start of the game, Freddi gives Grandma Grouper a flower as she delivers flowers to people close to her. Grandma Grouper reveals bad news: her treasure chest full of kelp seeds have been stolen and what's worse is that her garden is dying away. Without the seeds, she can't plant more kelp for the various fish of the sea, so Freddi assures her that she will find the chest and return it to her. Grandma Grouper is overjoyed that she will help her and gives Freddi her last Peanut Butter and Jellyfish Sandwich before going back to her house.
After Freddi and Luther find Grandma Grouper's chest and return it to her, she is overjoyed that the duo found it and Freddi, as the final touch, uses the seeds to plant new kelp for Grandma Grouper's garden. The three of them then go inside with the chest so that Freddi and Luther can tell Grandma Grouper how they found the treasure chest.
Grandma Grouper appears in a cameo as a Grandma Grouper Fortune Teller Machine at the carnival's funhouse.
Grandma Grouper only appears at the intro when Freddi and Luther stop by, explaining that they don't have much time to visit with her, as they are on their way to Coral Cove Park. She then pats their heads with her fin and tells them to have fun and be safe.