Lynn Loud Sr. and Rita Loud are the parents of Lincoln Loud and his ten sisters in the Nickelodeon animated series The Loud House. Lynn Sr., the family cook and the namesake of their fifth-oldest daughter, is a stern father who often steps in to call a halt to his kids' fights, but he loves and cares about them, and sometimes takes part in their antics for fun. Rita, who works as a dental assistant, also cares very much for her children, but is not afraid to punish them if they go too far. She and her husband act playfully romantic toward each other, though she is apparently more level-headed than him. In the show's first season, their faces were never fully shown onscreen.
In the series' second season premiere and Christmas episode, "11 Louds a Leapin'", Lynn Sr. bakes his homemade figgy pudding, which is shown to have a really bad smell, and asks his kids if they'd like to taste it, though none of them want to. Eventually, Lola, trying to be as nice as she can for Santa Claus, volunteers to taste it. Meanwhile, Rita is busy decorating the house, saying that she'd like to have a bigger fireplace to hang all the stockings on. As a running gag, she keeps asking where her decorations are, unaware of Leni having used them as material for Christmas outfits. Later, Lynn Sr. and Rita accompany their kids in bringing Christmas cheer to their lonely neighbor, Mr. Grouse, during which their faces are shown onscreen for the first time in the show's run.
In the online-exclusive Loud House short "12 Days of Christmas", in which the Loud family sings their version of the titular song, Lynn Sr. and Rita sing the last two gifts in the verse distribution. Lynn Sr.'s line is "eleven smelly diapers," referring to his having to change Lily's diapers, while Rita's line is "twelve Louds a-looking," in reference to her husband and their kids peeking at their Christmas presents.