Lucy first appeared during the episode, "My Big Fat Alien Wedding". She is Camille's cousin, and comes to her wedding to perform as the flower girl at the wedding (even(much thoughto Gwen was's disappointed,disappointment, since she was going to be the stand-in flower girl originally).when it seemed Lucy wouldn't be able to make it). Like Camille and Camille's parents, she is also a Sludgepuppy, but this wasn't not shown until alomstalmost at the end of the episode, when Ben trips on Lucy's "feet" when they wereare dancing at the wedding.wedding reception. She is at this moment, Ben and Gwen's second (or third) cousin.