Judge Stickleback is a light turquoise fish with light pink lips that appears to have light grayish-violet hair that is not very long. She also has a few wrinkles on her face. She also wears glasses and a black robe. Her body is not shown.
She is a fair Judge that is shown to get sort of emotional, but only when Plankton told his story about his Gram-Gram, which was probably a trick to get the Jury on his side. She sat at a wooden Judge desk, and she asked Plankton and Mr. Krabs questions about the case of Plankton falling because there wasn't a wet floor sign.
It is possible that Judge Stickleback may be a spoof of both Judy Sheindlin, star of the longest-running court series Judge Judy, because of her looking middle age, and Marilyn Milian, who has been the judge on The People's Court since 2001, and is the first Latina judge to preside over a court show.