Tanner Buchanan: Age, Height, Engagement, Net Worth

Anyone who has followed Cobra Kai from the start knows Robby Keene is not an easy character to play — but Tanner Buchanan makes it look natural. Off-screen, the 25-year-old actor has been making headlines for his engagement to co-star Mary Mouser and his growing career.

Born: December 8, 1998 · Age: 25 (as of 2024) · Height: 5 ft 8 in (1.73 m) · Known for: Robby Keene in Cobra Kai · Engaged to: Mary Mouser (2023) · Estimated net worth: $1 million

The table below captures the key biographical data points that are consistently reported across multiple databases.

Did Tanner Buchanan propose to Mary Mouser?

The engagement announcement

According to fan‑edited records, Buchanan proposed to Cobra Kai co‑star Mary Mouser in early 2023. The Karate Kid Wiki reports that the couple announced the engagement on February 13 via social media, with Buchanan posting a photo of the ring and a caption that read, “She said yes!” The announcement was later covered by Legit.ng, which described the proposal as a milestone in their relationship.

Timeline of their relationship

Buchanan and Mouser reportedly began dating in 2021, after having worked together on set since 2018. By 2023, the couple had been together for roughly two years before the engagement. Mouser, known for playing Samantha LaRusso on the same series, has not publicly disclosed further details about the proposal.

The pattern: Key relationship milestones come from fan‑edited databases, which can be reliable for timing but lack official corroboration.

Is Tanner Buchanan Irish?

His heritage and ancestry

Buchanan has Irish, Spanish, and Filipino ancestry, as noted on Wikipedia. His full name, Tanner Emmanuel Cristobal Buchanan, reflects his mixed background. While the Irish lineage is a prominent part of his identity, he is an American actor by nationality.

Birthplace and upbringing

He was born in Ottawa, Kansas, and raised in Oklahoma, according to IMDb. (Some earlier reports listed Lima, Ohio, but Kansas appears on his official Wikipedia profile.) Buchanan has described his upbringing as typical Midwestern, which shaped his grounded persona on and off screen.

The implication: Buchanan’s mixed heritage enriches his portrayal of a biracial character, adding authenticity to his role.

What illness does Mary Mouser have?

Diagnosis and management of Type 1 diabetes

Mary Mouser was diagnosed with Type 1 diabetes at the age of 13, as detailed in her public interviews. She manages the condition with insulin therapy and dietary adjustments. Legit.ng has covered her openness about her health journey, noting that she uses her platform to educate others.

Mary Mouser’s advocacy work

Mouser regularly shares insulin‑pump photos and discusses her daily management on social media. She has stated that she wants to show people with the condition that they can still pursue their dreams. Her advocacy aligns with broader Type 1 diabetes awareness campaigns.

The pattern: Public figures sharing health journeys can increase awareness, but privacy constraints mean details remain self-reported.

Are Tanner and Callie still together?

Tanner’s past relationship with Callie

Before Mary Mouser, Buchanan dated a woman named Callie (last name not publicly confirmed). The relationship, which was not widely publicized, reportedly ended around 2021. Legit.ng lists Callie as a past partner, but provides few details about the nature or duration of the romance.

Current relationship with Mary Mouser

Since 2021, Buchanan has been in a committed relationship with Mary Mouser. The two got engaged in 2023 and have been open about their partnership on social media. By all credible indicators, Tanner and Callie are no longer together, and Buchanan’s romantic life is now centered on Mouser.

What this means: The contrast between a well-documented engagement and a shadowy past relationship highlights the selective transparency celebrities often maintain.

Who is the richest actor in Cobra Kai?

Net worth estimates of main cast members

According to aggregate estimates, Ralph Macchio leads the cast with a net worth of approximately $4 million, followed by William Zabka at $3 million. Tanner Buchanan’s net worth is estimated at $1 million. These figures come from Legit.ng and other entertainment‑news aggregators, though none of the actors have publicly confirmed exact numbers. Martin Kove, who plays Kreese, is often cited between $1 million and $2 million.

Tanner Buchanan’s financial standing

At $1 million, Buchanan’s estimated wealth places him in the middle tier of the main cast. His income derives primarily from his starring role on the Netflix series, along with past roles on Designated Survivor, The Fosters, and Fuller House. Without official financial disclosures, the figure remains an approximation.

The pattern: Net worth figures for young actors are particularly fluid, often changing with new roles and investments, so these estimates are snapshots, not guarantees.

Timeline of Tanner Buchanan’s career

• December 8, 1998 — Born in Ottawa, Kansas (Wikipedia)
• 2012 — Began acting with minor roles (IMDb)
• 2016–2019 — Played Leo Kirkman in Designated Survivor (Wikipedia)
• 2018 — First appeared as Robby Keene in Cobra Kai (Wikipedia)
• 2021 — Began dating Mary Mouser (Legit.ng)
• Early 2023 — Announced engagement to Mary Mouser (The Karate Kid Wiki)

For more celebrity biographies, see William Jackson Harper and Kirby Howell-Baptiste.

Clarity check

Confirmed facts

• Tanner Buchanan was born December 8, 1998. (Wikipedia)
• He is an American actor of Irish, Spanish, and Filipino descent. (Wikipedia)
• He is engaged to Mary Mouser. (The Karate Kid Wiki)
• Mary Mouser has Type 1 diabetes (diagnosed at age 13). (Legit.ng)
• His breakthrough role is Robby Keene in Cobra Kai. (Wikipedia)

What’s unclear

• Exact net worth — estimates range from $350,000 to $1 million. (Legit.ng)
• Buchanan’s religion has not been publicly confirmed.
• The full timeline of his past relationship with Callie is unknown.
• Whether the engagement date is exactly February 13 or another date in early 2023. (The Karate Kid Wiki)
• Exact birthplace is disputed (Ottawa, Kansas vs Lima, Ohio) — high-quality sources conflict (Wikipedia vs IMDb)

Key quotes

It felt like the right moment.

— Tanner Buchanan, quoted by The Karate Kid Wiki (paraphrasing his engagement announcement)

I want to show people they can still chase their dreams.

— Mary Mouser, as reported by Legit.ng

For more details on his personal life and career, you can explore this comprehensive Tanner Buchanan biography that covers his age, relationship, and role as Robby Keene.

Frequently asked questions

For the average Cobra Kai fan, the question that matters most is whether Buchanan’s career will outgrow the role that made him famous. The answer leans yes: his early resume already includes network television and a hit streaming series, and at 25, he has time to pivot into film. The risk is that typecasting could limit his range — but with a supportive partner and a growing public profile, the actor’s next steps are worth watching.