Liliana Berry Davis Mumy (born April 16, 1994) is an American actress. Between 2002 and 2006, she appeared as Jessica Baker in the two Cheaper by the Dozen movies, Lucy Miller in two films of The Santa Clause trilogy and performed the voice of Mertle Edmonds in the Lilo & Stitch franchise.
Her father is actor Bill Mumy. Among his many roles, he appeared as Will Robinson in the Lost in Space TV series, and as a child in the 1961 The Twilight Zone episode "It's a Good Life". Liliana appeared with her father, as his child, in the revival series' 2003 sequel episode "It's Still a Good Life". She currently voices Beth Tezuka in the animated web series Bravest Warriors and Leni Loud in the Nickelodeon TV series The Loud House, and has been joined by her father on some episodes of both shows.
Mumy was born in San Marcos, California, the daughter of Eileen Joy (née Davis), a childbirth educator, and former child star Bill Mumy. She is the sister of former child actor Seth Mumy. She graduated from Laurel Hall School in North Hollywood, California and attended Campbell Hall School. She left there and graduated from Notre Dame High School in Sherman Oaks, California in 2012.
She is a fan of the Pittsburgh Penguins and the Los Angeles Lakers.
Mumy has appeared in several motion pictures. Her most notable film appearances are in Cheaper by the Dozen, Cheaper by the Dozen 2, The Santa Clause 2, as well as The Santa Clause 3: The Escape Clause. In 2002, Mumy played Audrey Fremont, the daughter of her father Bill's character Anthony, in a sequel to the classic The Twilight Zone episode "It's a Good Life" called "It's Still a Good Life".
Mumy provided the voice of Mertle Edmonds (Lilo Pelekai's rival) in Stitch! The Movie, Lilo & Stitch: The Series, Lilo & Stitch 2: Stitch Has a Glitch, and Leroy & Stitch, and voicing a character with a smaller role on American Dragon: Jake Long as Haley's rival at school. She is also the voice of Twinkle on Higglytown Heroes and the voice of Human Kimberly on Nickelodeon's Catscratch. Lesser roles included TV appearances playing Rachael/Rachel in six episodes on My Wife and Kids from 2002-2004 as well as young Donna on That '70s Show and guest starring in Scrubs as a girl at her birthday party (whose face J.D. daydreams of shoving into her cake). She also voiced Panini in the cartoon Chowder, airing on Cartoon Network and played Lula in The Cleaner in 2008. She also voiced a feisty, fashionable, pink-loving, golden retriever puppy named Rosebud in the Disney movies Snow Buddies, Space Buddies, and Santa Buddies. In June 2012, Mumy started voice work as 'Beth' in Bravest Warriors, an animated series created by Pendleton Ward, produced by Frederator Studios for their channel, Cartoon Hangover, a premium content partner of YouTube. Mumy also provided the voice of Roxy on Nickelodeon's Winx Club and Leni Loud on Nickelodeon's The Loud House.