NancyO'Malley, or better known as Officer Nancy, is a blonde-haired, female lavender fish. She works as a police officer in Bikini Bottom with other officers, most commonly with Officer Slugfish. She first appears in the episode "Nasty Patty."
She is usually a lavender fish with blonde hair. She wears a white shirt with a big gold badge on it, blue pants, black shoes, and a blue police hat. In The SpongeBob SquarePants Movie, she is blue, and in "Patty Caper," she is green.
Nancy's six partners include Officer Slugfish, Officer Rob Johnson, the yellow officer, a purple one, a female green officer with orange curly hair, and her twin sister, the turquoise officer, who appears in "Patty Caper." She looks similar to Nancy except that she is green and has red hair. SpongeBob later calls her to arrest the Tattletale Strangler. She is happy when SpongeBob puts the Strangler in jail.
Officer Nancy is one of the characters to whom SpongeBob can talk to and whom he can help, such as delivering packages for Squidward and completing her patty that does not have a pickle. She has a fish tail in the game, and when the player talks to her, her picture is shown in which she has dark purple skin and has orange hair.