Mary Mouser’s 2025: Engaged To Tanner Buchanan, Cobra Kai Season 6 Finale, And Her Type 1 Diabetes Advocacy

Mary Mouser, the talented actress best known for her fierce portrayal of Samantha "Sam" LaRusso on Netflix’s hit series *Cobra Kai*, is currently at the peak of her career, with major professional and personal milestones dominating the headlines in late 2025. Her life has been a whirlwind of high-profile projects, public appearances, and an exciting announcement that has delighted fans worldwide. The focus right now is heavily on the conclusion of the *Karate Kid* saga and a new chapter in her personal life.

The current date of December 15, 2025, finds Mouser celebrating the success and emotional conclusion of *Cobra Kai* Season 6, Part 3, while simultaneously planning a wedding. Her ability to balance a demanding acting career with significant health advocacy makes her one of the most compelling young stars in Hollywood today. This deep dive explores her complete profile, the latest updates on the final season of her iconic show, and her inspiring work off-screen.

Mary Mouser: Complete Biography and Profile

Mary Matilyn Mouser has built a prolific career spanning over two decades, starting as a child actress and evolving into a globally recognized star. Her journey is marked by versatility, from dramatic television roles to voice work in animated features.

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• Full Name: Mary Matilyn Mouser
• Date of Birth: May 9, 1996
• Place of Birth: Pine Bluff, Arkansas, U.S.
• Age (as of Dec 2025): 29
• Occupation: Actress
• Notable Roles: Samantha LaRusso (*Cobra Kai*), Lacey Fleming (*Body of Proof*), Mia Weller (*Life Is Wild*).
• Early Career Highlights: She began her career at a young age, with her first major role being a photo double for Abigail Breslin in the film *Signs* (2002). She also had early television appearances on shows like *Without a Trace* and extensive voice work, including the English dub of the Studio Ghibli film *Pom Poko* (2005) and the Starz Kids & Family series *Me, Eloise*.
• Family: She has two siblings, Aaron Parker Mouser and Laura Ashley Mouser, both of whom are also actors.
• Personal Life Update (2025): Engaged to *Cobra Kai* co-star Tanner Buchanan.
• Net Worth: Estimated to be around $2 million.

The Shocking 2025 Engagement to Tanner Buchanan

One of the biggest pieces of news surrounding Mary Mouser in 2025 was the announcement of her engagement to long-time friend and *Cobra Kai* co-star, Tanner Buchanan. The two, who portray on-screen rivals and former love interests Samantha LaRusso and Robby Keene, revealed their engagement in February 2025 at the series finale premiere event for *Cobra Kai*.

The announcement created a massive buzz among the fandom, who have closely followed their off-screen friendship and on-screen chemistry for years. While their characters, Sam and Robby, have a complicated history of rivalry and romance within the Miyagi-Do and Cobra Kai dojos, the actors' real-life relationship has been one of deep mutual respect and support.

Mouser and Buchanan's engagement marks a beautiful conclusion to the *Cobra Kai* era for them, transitioning from co-stars to future life partners. Details about the wedding remain private, but the news cemented their status as one of Hollywood's most popular young couples.

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Samantha LaRusso's Final Fight: Cobra Kai Season 6 Updates

As of late 2025, Mary Mouser has been intensely focused on promoting the final installment of the beloved Netflix series, *Cobra Kai* Season 6, particularly the highly anticipated "Part 3." This season brings the decades-long feud between Daniel LaRusso and Johnny Lawrence to a head, culminating in the global karate tournament, the Sekai Taikai.

Mouser's character, Samantha LaRusso, the daughter of the original Karate Kid, is central to the final arc. In recent interviews, Mouser has reflected on the emotional weight of saying goodbye to Sam and the physical demands of the final season.

The Emotional Weight of the Sekai Taikai

Mouser has spoken about the finality of the Sekai Taikai tournament, noting that even she was surprised by the direction her character's ending took. Samantha LaRusso’s journey has been one of self-discovery, moving beyond the shadow of her father, Daniel LaRusso, and finding her own unique path in Miyagi-Do karate. The final episodes of Season 6 explore Sam's biggest moments, requiring her to step up as a leader and a formidable fighter in the global arena.

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Fans have praised Mouser's performance for capturing the complexity of Sam, who struggles with anxiety, loyalty, and the pressure of her legacy. Her discussions at events like the 2025 PaleyFest LA have given deep insights into the character's evolution from a popular high school student to a dedicated martial artist.

Beyond the Dojo: Mary Mouser’s Powerful Advocacy Work

While her acting career is booming, Mary Mouser is equally dedicated to her role as a powerful health advocate. Mouser was diagnosed with Type 1 Diabetes (T1D) at the age of 13.

The diagnosis initially caused her fear that the condition would hinder her acting dreams, but she has since transformed that fear into a platform for awareness and support. She is a prominent public figure in the T1D community, frequently sharing her personal experiences with managing her health while on set, including wearing a continuous glucose monitor (CGM) and an insulin pump, to normalize life with the condition.

Mouser actively works with organizations like JDRF (formerly Juvenile Diabetes Research Foundation) and has participated in events like the Breakthrough T1D Children's Congress to advocate for research and a cure. Her open discussions about the challenges of living with T1D, even while portraying a physically demanding role like Samantha LaRusso, have inspired countless fans and provided a visible role model for young people managing chronic illness.

Her commitment to this cause adds significant depth to her public profile, showcasing her resilience and determination. As she moves into new projects post-*Cobra Kai*, her advocacy work is expected to remain a central part of her life, cementing her legacy not just as a talented actress, but as a compassionate public figure.