Lily is the matriarch of the Munster family. She is beautiful. She is very close with her niece, Marilyn. She has a werewolf for a brother, who appears in one episode, and a sister who is mentioned a few times who is Marilyn's mother. Lily is the voice of reason in the Munster household, often relied upon to set problems right, and typically mediates when Herman and Grandpa squabble. Lily also has a fiery temper. While she is deeply in love with Herman, she also frequently gets very angry at him, and Herman often meekly discloses his fear of being on the receiving end of her wrath. She also has reprimanded her own father on several occasions for his own foolish actions and stubborn self-righteousness. Lily treats her niece Marilyn as her own daughter, but shares the family's concern that Marilyn's "hideousness" is going to condemn her to a spinster's life. As such, she is very much in favor of Marilyn dating, and is very accommodating to Marilyn's fleeting beaus despite their "rudeness.". Lily is very supportive of her son, Eddie, and keeps a close eye on his activities and social circle. Lily is mainly a housewife, and her duties include spreading garbage around the mansion and "dusting" with a vacuum cleaner operating in reverse so that it blows dirt about in the nine-room-and-a-dungeon house. During the course of the series, Lily works as a welder in a shipyard, a fashion model, and a palm reader in a tea room. In one episode she forces Herman to give her money so that she and Marilyn can open a beauty parlor, but this soon goes out of business, as Lily assumes her clientele wants to look more like her. These part-time jobs never seem to stick, and Lily would be back to being a homemaker by the next episode. Lily is a beautiful and slender woman who appears to be in her middle age years, although she is actually hundreds of years old. Later incarnations of the character, played by different actresses, would change her skin from green to pale white. Lily usually dresses in an ankle-length pale pink gown that appears faded and old, and she sometimes also wears a scarf. Her necklace features a bat-shaped medallion. When away from the Munster house, she often wears a long silver cape with a hood, which in reality is a casket liner. In the episode "Munsters Masquerade", Lily demonstrates the ability to float in the air while dancing.
Development
Lily was not in the original pilot episode of The Munsters. Instead, Herman is married to a much more Gothic-looking wife named Phoebe, played by Joan Marshall. The producers scrapped the Phoebe character after deciding she seemed almost an exact double of the Morticia Addams character on The Addams Family. Lily appeared in the second pilot and all other episodes. In the pilot, the Phoebe character was depicted as more goth in nature, and also has a somewhat abrasive bickering relationship with Herman and a strained relationship with Eddie, both elements toned down with Lily. Yvonne De Carlo was cast for the role in March 1964. When first cast, Gwynne and Lewis went to the producers and complained because De Carlo was a movie star of long standing and they were worried that she would not fit in. However, after a few shows, they had to admit they had been wrong, and all got on well. De Carlo approached the role with Donna Reed as her primary inspiration.