Guillermo Alonso

Acting · Crew

**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 includes a string of short films that built the foundation for his current run of festival and studio projects. He is represented by **Vision Entertainment** and **Innovative Artists**.

Filmography

• 2026The Huntress — Rosales
• 2026The Snub — Juan
• Found — Austin Scott
• 2023La Grande Ourse — Machinist
• Billy the Kid — Melquiades Segura
• 2022To Go to the Moon — James Hamilton
• 9-1-1 — Cal
• Criminal Minds — Agent Owen Helm