She looks similar to Mrs. Puff: overweight, short, stubby fins, and blonde hair color. The only difference between her and Mrs. Puff are their hair and clothing. She wears a light purple dress and a long magenta feather in her hair. Also, her hair is longer and curlier.
Role in episode
At the end of the episode, she lets out her anger and stomps on Dead Eye Plankton multiple times.