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Guillermo Alonso

Sep 17, 2026 (0 years old) in

Guillermo Alonso is known for Billy the Kid (2022), Criminal Minds (2005) and 9-1-1 (2018).

Known For

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Criminal Minds

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9-1-1

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Billy the Kid

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Found

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The Huntress

Credits

2026 · The Snub as Juan
2026 · The Huntress as Rosales
2023 · Found as Austin Scott
2022 · To Go to the Moon as James Hamilton
2022 · Billy the Kid as Melquiades Segura
2018 · 9-1-1 as Cal
2005 · Criminal Minds as Agent Owen Helm