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Javier Harvey Guillén (born May 3, 1990) is an American actor who is best known for his role as the human familiar Guillermo de la Cruz in the 2019 television series What We Do in the Shadows. He portrays medical examiner Jasper in the first season of the Reacher Amazon Prime television series.
Guillén is the son of Mexican immigrants. He adopted the stage name "Harvey" when his teachers could not pronounce his first name.