Liliana Berry Davis Mumy is an American actress and voice actress. Her most notable roles are as Jessica Baker in the Cheaper by the Dozen movies with Steve Martin, Lucy Miller in The Santa Clause 2: The Mrs. Clause & The Santa Clause 3: The Escape Clause with Tim Allen, Mertle Edmonds on the Disney Channel original series Lilo & Stitch: The Series, Panini on Chowder and Wadi in The Secret Saturdays, and Beth Tezuka on the web series Bravest Warriors. Her father is actor Bill Mumy, famous for his roles in the classic science fiction TV series Lost in Space, Babylon 5, and The Twilight Zone episode, \"It's a Good Life\", as well as one half of the comedy music duo Barnes & Barnes. Her father also appeared in Bravest Warriors as Beth's father, Ralph Waldo Pickle Chips.