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Guillermo Alonso
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Guillermo Alonso

Actor

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8Credits

**Guillermo Alonso** is an actor whose recent work spans festival cinema, commercial theatrical releases, and American network television. Bilingual in English and Spanish, he has built a career that moves fluidly between Mexico and the United States. He stars in **La Cazadora** (*The Huntress*), which premiered on the festival circuit including **Sundance** and the **Morelia International Film Festival (FICM)**, and in **El Desaire**, released theatrically in Mexico through Cinépolis and Cinemex. On television, Alonso has appeared in **Billy the Kid** (as Melquiades Segura), **Criminal Minds** (as Agent Owen Helm), **9-1-1** (as Cal), and **Found** (as Austin Scott). His earlier work…

Known for

Criminal MindsAgent Owen Helm9-1-1Cal
Billy the KidMelquiades Segura
FoundAustin Scott
The SnubJuan

Filmography

AllMoviesShows
2026The SnubJuanMovie
2026The HuntressRosalesMovie
2023La Grande OurseMachinistMovie
2022To Go to the MoonJames HamiltonMovie

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