Who plays The Gray Man's Sierra 4? Meet actor Callan Mulvey

The Gray Man hosts a trio of Hollywood actors on the front line but fans are curious to know who portrays Sierra 4.

Callan Mulvey - IMDb

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Who plays The Gray Man's Sierra 4? Meet actor Callan Mulvey

The Gray Man Cast and Character Guide: Who's Who?

The Gray Man Cast and Character Guide: Who's Who?

The Gray Man - Internet Movie Firearms Database - Guns in Movies, TV and Video Games

Callan Mulvey - IMDb

Residually unsettling The Dark and the Wicked lives up to its title

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Dominic Corry: Callan Mulvey on 300: Rise of an Empire - NZ Herald

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The Gray Man (2022) - “Cast” credits - IMDb