Lucy L. Loud is the fifth-youngest of Lincoln Loud's ten sisters in the Nickelodeon animated series The Loud House. She is a gloomy and cynical goth girl with interests in Gothic poetry and fiction. Lucy is also known for her tendency to pop up out of nowhere behind her siblings' backs and scare them. Despite (or perhaps because of) her spooky demeanor, though, she is also the calmest of the Loud sisters.
As one of the show's main characters, Lucy naturally appears in the show's Christmas episode, "11 Louds a Leapin'", sharing her subplot with her older sister and roommate, Lynn Jr. Much of the episode finds Lucy and Lynn looking all over the house to find where their parents have hidden their Christmas presents. At one point, Lucy performs one of her séances to contact the Ghost of Christmas Past, thinking they'll be able to help. However, it is cut short when Lincoln informs her and the rest of their sisters that he just found out why Mr. Grouse is so crabby around Christmastime. Upon learning about the old man's sad state of affairs, Lucy realizes they should have focused on giving and takes part in bringing cheer to their neighbor. At the end of the episode, on Christmas morning, Lucy is shown having apparently applied glitter to her statue of Edwin.
In the online-exclusive Loud House short "12 Days of Christmas", in which the Loud family sings their version of the titular song, Lucy's line is "seven bats a-flying", which she says while accompanied by her pet bats.