Nancy O'Malley (or better known as Officer Nancy) is a blonde-haired, purple fish (pictured on the right). She works as a police officer in Bikini Bottom with other officers. She appears to be quite dimwitted.
She and her partner had a larger role in "Nasty Patty". In that episode, Mr. Krabs gave her a soda but forgot to give her ice, Then, when she hit the Health Inspector in the head with a barrel, her first name is revealed. When she arrested SpongeBob for not inviting her to his party in "Party Pooper Pants", her last name is also revealed. Nancy's 6 partners are Officer John, Officer Rob, a yellow one, a purple one (males), a female green officer with orange curly hair (appeared only in the ending of "No Free Rides" and "Goo Goo Gas"), and her twin sister Marcie, who only appears in "Patty Caper". She looks just like Nancy except that she's green and has red hair. SpongeBob called her to arrest the Tattletale Strangler (unfortunately the Strangler escaped again). She was happy when SpongeBob "put" the Strangler in jail (the strangler did it by himself and was with Patrick).
Video Game Appearances
The Yellow Avenger - Officer Nancy was one of the characters to whom SpongeBob can talk and whom he can help (such as delivering packages for Squidward and completing her patty that doesn't have a pickle). She has a fish tail in the game, and when you talk to her, her picture is shown in which she has dark purple skin and has orange hair.