Mouser was born on May 9, 1996. She was featured on the
Starz Kids & Family series
Eloise: The Animated Series as the voice of Eloise and appeared as the child-lead in the
Hallmark Channel original movie ''
A Stranger's Heart. Mouser has also done voice work for animated features such as Dragon Hunters, Tarzan II, and Pom Poko, and was a voice actress in the audio drama series, Adventures in Odyssey'' as Samantha McKay, younger sister of Grady McKay. Mouser has also appeared in guest starring roles on
CSI: Crime Scene Investigation,
Without a Trace,
The King of Queens,
Monk,
Inconceivable,
Scrubs,
One Life to Live and had a recurring role on
NCIS as
Leroy Jethro Gibbs' daughter Kelly. She also had a series regular role in the
CW series
Life Is Wild as Mia Weller, for 13 episodes. At the 2006 Best of Fest Awards at the KIDS FIRST! Film and Video Festival, Mouser received the Outstanding Performance Award for her voiceover work in
Eloise: The Animated Series. Mouser also guest starred on
Lie to Me and in
Ghost Whisperer as the character Madison. Mouser starred in the
ABC medical drama Body of Proof as
Dana Delany's daughter,
Lacey Fleming. Mouser also played the roles of both Savannah O’Neal and Emma Reynolds in the Disney Channel Original movie
Frenemies, which was released in 2012. Since 2018, Mouser played
high school and
karate student Samantha "Sam" LaRusso, in the
Cobra Kai series, initially launched by
YouTube Premium and later on
Netflix, where she is part of the main cast. Mouser has also appeared on a
Mind Field episode (S2 E5) on the channel
VSauce on
YouTube. In 2024, she voiced the character Cleo in the audiobook
Know Your Newlywed. == Personal life ==