(written from a Production point of view)
Justin Louis (born 20 February 1967; age 57), also known as Louis Ferreira, is the actor who played Trevis in the Star Trek: Voyager fifth season episode "Once Upon a Time".
He was born in Portugal but immigrated to Canada with his family at a young age.
Louis is best known for his roles as Colonel Everett Young in Stargate Universe (2009-11) and as Art Blank in Saw IV (2007, with Dina Meyer) Saw V (2008, with Mark Rolston and Greg Bryk), and Saw 3D (2010, with Greg Bryk). He also played FBI assistant director John Pollock in the crime series 1-800-Missing (2004-06).
Louis has appeared on CSI: Crime Scene Investigation and CSI: Miami. The former reunited Louis with fellow "Once Upon a Time" guest star Wallace Langham. On the latter, Louis acted with Anthony Holiday and Michael Buchman Silver. He also appeared as Colonel Hall in Primeval: New World.
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