Miku Martineau and Kate: the Netflix Debut Behind the Name Everyone Is Searching

Miku Martineau and Kate: the role people are actually searching for

If you have typed her name next to the word Kate, you are looking for a 2021 Netflix action thriller and a character called Ani. Miku Martineau plays her: a loud, funny, relentlessly talkative teenager who attaches herself to a dying assassin for one very long night in Tokyo. The assassin is Mary Elizabeth Winstead, poisoned and given roughly a day to live. Woody Harrelson plays her handler. Jun Kunimura plays the crime boss Kijima, who happens to be Ani's uncle, and that family tie is the knot the whole plot pulls tight.

The film, directed by Cedric Nicolas-Troyan, landed on Netflix on 10 September 2021 after being shot across Tokyo, Thailand and Los Angeles in the autumn of 2019. Reviews were mixed, sitting at roughly 45 percent on Rotten Tomatoes, with most of the critical warmth going to Winstead. What survived the mixed notices was the double act at the centre of it, because the film only works if you believe these two mismatched people start to matter to each other. That is the job Martineau was handed on her very first feature.

Who is Ani in Kate, exactly?

Ani is the daughter of a man Kate killed years earlier, which she does not know when the two of them meet. She is dragged into the chase as leverage, then slowly becomes something closer to a reason for Kate to keep going. It is a role that could easily have been a prop, a kid to be carried from car to car, and the reason the search term keeps coming back is that it is not played that way. Readers who like working out how a story quietly reverses on itself will recognise the same pleasure in a Netflix drama whose ending needs unpacking.

One detail puts the whole thing in perspective. Filming ran from September to November 2019, which means she had only just turned fifteen when she shot it, and she was sixteen when it went live. Kate was her first feature film, full stop.

Who is Miku Martineau?

Her full name is Miku Patricia Martineau. She was born on 13 September 2004 in Toronto, Ontario, which makes her 22 as of this month, her birthday having passed two days before this piece was written. She grew up in the Beaches, the lakefront pocket of east Toronto, with a Japanese-Canadian mother, Kumiko, and a father, Peter, who is a familiar face in the neighbourhood's small business world. She still lives and works out of Toronto, which is unusual for someone at her level and something she talks about on purpose.

Where did she learn to act?

The origin story is refreshingly ordinary. It began with a third-grade school play, a scaled-down Wizard of Oz, of the kind that produces far more embarrassed parents than working actors. Performing arts camps in Toronto and New York followed, then workshops, then an agent, then a feature film in Tokyo. She trained formally at Randolph College for the Performing Arts in Toronto, where the curriculum covers acting, singing and dance, and the singing is not decoration: she has worked as a voiceover artist and singer alongside the on-camera work, the sort of parallel track that turns up in a young performer balancing music with everything else. She has been working professionally since 2015.

Why is Miku Martineau trending right now?

Because of a show called Crew Girl, which arrived on Netflix on 10 September 2026, exactly five years to the day after Kate. She is the lead. The series is eight episodes of about 44 minutes, created and run by Vivian Lin and developed with Morwyn Brebner, and it went to number one on Netflix's global chart within days, landing in the top ten in roughly 90 countries. Critics were split in the usual way: around 77 percent on Rotten Tomatoes, with some calling it earnest and well made and others calling it a familiar teen sports formula. Audiences did not seem to care about the split, which is generally how these things go once a trailer catches, the same word-of-mouth mechanics you see behind a food trend that spreads faster than anyone planned.

What is Crew Girl about?

She plays Teagan Tao, sixteen, a serious rower whose family is upended by her father's financial scandal and who ends up at an elite East Coast prep school with no girls' rowing programme. To stay on the water at all, she takes the coxswain seat in a dysfunctional boys' varsity boat, which is the small, clever hinge the whole show turns on. Jessica Pare plays her mother, Sam Braun is the team captain and Kyle Clark is the underdog rower. Anyone who has ever stood on a dock arguing about hulls will enjoy that the boats get treated with real respect here, though racing shells are a long way from the aluminium boats most families actually buy. The prep-school-to-varsity pipeline it depicts is also very real, and readers who follow the eligibility rules that decide young athletes' futures will spot the bones of it.

Worth knowing: although Crew Girl is set in the United States, it was shot in Victoria and Vancouver with a largely Canadian cast and writing room. Martineau has used her interviews to argue that the Canadian industry deserves more credit than it gets, and that on-screen representation is worth getting right rather than gesturing at. Coming from a Toronto-born, Japanese-Canadian lead of a global number one, the point lands without needing to be shouted.

From Kate to Bet: what she did in between

The gap between debut and stardom was filled with steady, varied work. In 2022 she appeared as Christine in the teen comedy Honor Society. In January 2025 she played the young Philippa Georgiou in Star Trek: Section 31, a franchise credit that puts an actor in front of an enormous and very attentive audience. Then came Bet, released on Netflix on 15 May 2025, all ten episodes at once: a live-action series inspired by the manga Kakegurui, with Martineau as Yumeko, a compulsive gambler who transfers into a prep school to find out what really happened to her parents. Reviews were harsh in places, but the show travelled, and it was renewed for a second season in June 2025. Adaptations that cross from Asian source material to Western screens carry their own expectations, much like a Chinese drama that finds a global audience, and Bet is the role that turned her from a name in a cast list into a lead.

The people around her

Family first, because it is the part she volunteers most readily: her mother's Japanese heritage, her father's Toronto business, a home base she has not abandoned for Los Angeles. On the professional side, Mary Elizabeth Winstead functioned as a mentor during Kate, and the two have spoken publicly about how quickly they clicked, which matters enormously when a fifteen-year-old is carrying half a film. Her Crew Girl co-stars are the current circle, and she belongs to a wider group of Canadian performers who work at home and export the results, a lineage that runs from Toronto comic actors who became household names through to Canadians who built their own audience before anyone commissioned them.

If you like following actors who broke out young, she sits comfortably alongside young screen actors who arrived fully formed and another performer whose name reads like a character from her own show. Fans of streaming teen fiction who fill their evenings with quizzes about which fictional house they belong to are exactly the audience Crew Girl was built for, and the fandom habits follow the same pattern: memes first, then rewatches, then a wave of searches about cast ages and heights, the same curiosity that drives interest in how tall a newly famous person actually is.

Where to follow her and what happens next

The reliable places are the official Netflix pages for Crew Girl and Bet, plus the interview rounds she does with Canadian outlets, which tend to be more substantial than the two-line briefs elsewhere. That gap is one of the reasons fotobreak keeps a running file on names the big outlets skip. Her social accounts run under her own name; she is not selling a product line, and her earnings have never been publicly discussed, so anyone quoting a net worth figure for her is guessing.

What is next is genuinely open. A second season of Bet was ordered, a project called The Miniature Wife has been attached to her name, and Crew Girl's chart performance is the kind that usually produces a renewal conversation fast, though nothing has been confirmed at the time of writing. Announcements of that sort tend to arrive the way a hit drama quietly enters production on its next season does, with a short statement and no fanfare, or in the form of a trailer that drops without warning. Streaming services keep betting on recognisable leads, which is the same logic behind Netflix handing a proven creator a new series, and Martineau now qualifies as one.

The through line, five years from Kate to Crew Girl, is that she keeps getting handed characters who talk their way through fear. Ani did it in a car in Tokyo. Yumeko did it at a card table. Teagan does it from the stern of a boat, shouting at eight people who do not want to listen. A young actor who is genuinely good at that will not run out of work soon, and the interest in her private life that inevitably follows a chart-topping show, the kind that surrounds any young performer whose fans want to know who they are dating, is better left where she leaves it: unaddressed, while she gets on with the job.