Mary Mouser is an American actress best known for playing Samantha “Sam” LaRusso on the Netflix series Cobra Kai.
She began acting as a child and later added voice roles, network television work, and an online following on YouTube and TikTok.
Mary Mouser Quick Facts
| Detail | Information |
|---|---|
| Full Name | Mary Matilyn Mouser |
| Born | May 9, 1996, Pine Bluff, Arkansas |
| Age | 30 years |
| Zodiac Sign | Taurus |
| Nationality | American |
| Profession | Actress and online content creator |
| Known For | Sam LaRusso in Cobra Kai |
| Height | 5 ft 3 in (1.60 m) |
| Fiancé | Tanner Buchanan |
| Net Worth | $2 million |
Who is Mary Mouser?
Mary Matilyn Mouser is an American actress and online content creator from Pine Bluff, Arkansas.
Fans know her best as Sam LaRusso, the daughter of Daniel LaRusso, in Cobra Kai. Her Wikipedia profile lists credits that go back to the early 2000s.
She also voiced the title character in Eloise: The Animated Series. In 2014, she played Karen Grant, the daughter of Fitz and Mellie, on Scandal.
She has spoken publicly about living with type 1 diabetes since 2009.
Early Life of Mary Mouser
Mary Matilyn Mouser was born on May 9, 1996, in Pine Bluff, Arkansas. Her parents are Scott and Tina Mouser.
She has two siblings, Laura Ashley Mouser and Aaron Parker Mouser.
Acting started early for her. As a young child, she worked as Abigail Breslin’s photo double in Signs, the Mel Gibson film.
In 2004, she made her television debut as Amy Rose on Without a Trace.
Voice work followed in 2005 with Son of the Mask and Tarzan II. Later credits include Dragon Hunters in 2008 and The Hole in 2009.
Mary Mouser Age / Birthday
Mary Mouser is 30 years old as of 2026, born on May 9, 1996. Her zodiac sign is Taurus, a sign often linked with patience and determination.
She still acts on screen and posts videos online.
Mary Mouser Ethnicity and Nationality
Mary Mouser is American. She is a Pine Bluff, Arkansas, native.
Her hometown paper, the Pine Bluff Commercial, covered her casting on Scandal.
Mary Mouser Height and Weight
Mary Mouser is 5 feet 3 inches tall, which equals 1.60 meters. Her weight is not publicly confirmed.
For Cobra Kai, she learned Muay Thai. That training shaped the fight scenes her character performs on the show.
Mary Mouser Career
Early Career (2004-2010)
Mouser made her television debut in 2004 as Amy Rose on Without a Trace. In 2005 alone, she followed with guest spots on Scrubs, Monk, Inconceivable, CSI, and The King of Queens.
She also played Kelly Gibbs, the daughter of Leroy Jethro Gibbs, in nine episodes of NCIS.
In 2006 and 2007, she voiced the title character in Eloise: The Animated Series for 13 episodes.
She then played Mia Weller in 13 episodes of the CW series Life Is Wild, a role that later earned a Young Artist Award nomination.
Breakthrough Role (2011-2017)
In 2011, Mouser joined the ABC medical drama Body of Proof as Lacey Fleming, the daughter of Dana Delany’s character.
She stayed in the main cast for 36 episodes through 2013. In 2012, she played two look-alike roles in the Disney Channel movie Frenemies.
In 2014, she appeared in the films Medeas, Field of Lost Shoes, and Alexander and the Terrible, Horrible, No Good, Very Bad Day.
That same year, she played Karen Grant on Scandal. She also appeared in The Fosters from 2013 to 2015.
Cobra Kai and Recent Work (2018-Present)
In 2018, Mouser began playing Samantha “Sam” LaRusso, a high school karate student, in Cobra Kai.
The series launched on YouTube Premium and later moved to Netflix, where she stayed in the main cast.
Cobra Kai ended in 2025 after six seasons, with Mouser in 65 episodes. In 2024, she voiced Cleo Weaver in the romance audiobook Know Your Newlywed, opposite Tyler Posey.
In 2025, she also appeared at fan conventions such as MegaCon Orlando and ATL Comic Convention.
Mary Mouser Filmography
Her credits span film, television, and voice acting since the mid-2000s.
| Year | Title | Role | Type |
|---|---|---|---|
| 2005 | Son of the Mask | Alvey Avery (voice) | Film |
| 2008 | Dragon Hunters | Zoé (voice) | Film |
| 2011-2013 | Body of Proof | Lacey Fleming | TV series |
| 2014 | Field of Lost Shoes | Libby Clinedinst | Film |
| 2014 | Alexander and the Terrible, Horrible, No Good, Very Bad Day | Audrey Gibson | Film |
| 2014 | Scandal | Karen Grant | TV series |
| 2016 | Freakish | Mary Jones | Hulu series |
| 2018-2025 | Cobra Kai | Samantha LaRusso | TV series |
| 2024 | Know Your Newlywed | Cleo Weaver | Audiobook |
Body of Proof gave her 36 episodes as a main cast member. She appeared in the Hulu series Freakish in 2016. Cobra Kai remains her longest-running role at 65 episodes.
Mary Mouser Awards and Recognition
The Young Artist Awards nominated Mouser twice in 2008. Both nominations came in supporting young actress categories.
- Best Performance in a TV Movie, Miniseries or Special, Supporting Young Actress, for A Stranger’s Heart (2008, nominated)
- Best Performance in a TV Series, Supporting Young Actress, for Life Is Wild (2008, nominated)
Her Hallmark movie A Stranger’s Heart earned the first nomination. Life Is Wild brought the second.
Mary Mouser Boyfriend Tanner Buchanan
Mary Mouser is engaged to her Cobra Kai co-star Tanner Buchanan. The two met in October 2017 while filming the show’s first season.
They announced their engagement in February 2025. The couple revealed the news at the Cobra Kai series finale premiere in Hollywood, where they showed off their rings.
Mouser also posted on Instagram, writing “friends to lovers trope achieved.” Before Buchanan, Mouser dated Brett Pierce.
She and Pierce began dating in December 2015, and reports of their breakup surfaced in 2024.
Mary Mouser Net Worth
Mary Mouser’s estimated net worth is $2 million as of 2026. Her income comes mainly from acting and voice work. She appeared in 36 episodes of Body of Proof.
Her biggest role came as Sam LaRusso on Cobra Kai, which ran from 2018 to 2025.
She also works in voice acting and audiobooks, and she posts on YouTube and TikTok. She voiced Cleo Weaver in the 2024 audiobook Know Your Newlywed.
Mary Mouser Social Media
Mary Mouser is an influencer on both YouTube and TikTok. She also posts on Instagram, where she shared her engagement news in February 2025.
Her Instagram story that month carried the “friends to lovers” line. In May 2019, she posted a video on her YouTube channel about living with type 1 diabetes.
The video is titled My Type 1 Diabetes Story. She received her diagnosis in 2009.
Frequently Asked Questions
How old is Mary Mouser?
Mary Mouser turned 30 on May 9, 2026.
What is Mary Mouser’s net worth?
Her net worth stands at $2 million in 2026.
Who is Mary Mouser engaged to?
Her fiancé is Tanner Buchanan, her Cobra Kai co-star.
Where is Mary Mouser from?
She comes from Pine Bluff, Arkansas.
What is Mary Mouser best known for?
She is best known as Sam LaRusso on Netflix’s Cobra Kai.
How tall is Mary Mouser?
She measures 5 feet 3 inches, or 1.60 meters.
Conclusion
Mary Mouser has acted on screen since 2004, moving from guest spots on Without a Trace and NCIS to six seasons as Sam LaRusso.
Her voice work, her YouTube and TikTok channels, and her engagement to Tanner Buchanan keep the 30-year-old actress in the public eye.