The unnamed nurse is a character who first appears in the episode "The Lost Mattress."
She is a light green fish with black hair and light red lips. She wears a light blue nurse dress, white shoes, non-transparent sunglasses, and a white nurse hat with a red cross. In "Goodbye, Krabby Patty?," her nurse hat is replaced with a pink headband.
Mr. Krabs complains that he cannot afford his medical bill, but due to him using Gary as a magnet, he obtains large amounts of money. The nurse is then seen taking his money, which is stuffed in many bags, away from him.
"Goodbye, Krabby Patty?"
She is one of the many people at Patrick's 400th commercial party, and is seen serving drinks to Buddy and Lisa.