Donna is a minor character who only appears in the episode "Doing Time."
She is a light-teal colored fish with long, blonde hair and a mole on her cheek. She spent time in the Bikini Bottom Jail. Donna looks like a woman, but has the voice of a man. She calls Mrs. Puff "Puff Mama" and she is seen to like chili.
Donna appears at the Bikini Bottom Jail with Mrs. Puff and becomes friends with her.