Melba is Rocko's unseen neighbor in Rocko's Modern Life.
Little is known about Melba apart from what Rocko and Heffer mention. Despite never being seen, it can be assumed she's very attractive as Rocko goes bananas every time he sees her. Rocko is crestfallen to find out she's has a boyfriend named Dave who is not only handsome but also rich and friendly. Heffer convinces Rocko to forget about Melba and start dating, which ends in disaster for Rocko. Frustrated, Rocko decides to just go up to Melba and introduce himself. At that moment, Heffer reveals that he'd put a love confession to Melba in the newspaper under Rocko's name. Rocko sees Melba pick up the paper and drive off with Dave, killing his confidence once and for all.