Esmeralda is Quasimodo's pet rat and the secondary antagonist of Hotel Transylvania. She is always accompanying the great chef. Esmeralda first appears when Quasimodo interrupts Dracula about a dish. She begins sniffing Jonathan and tells her master that he is human. Dracula quickly denifes this and sends both of them off. Esmeralda then appears as Mavis's party, her and her master planning to reveal Jonathan is in fact human. While at first, the other monsters don't believe them, Esmeralda attacks Jonathan, showing that he is a human. Her final fate is unknown.