(written from a Production point of view)
Chris Freeman (born 20 March 1969; age 44) is the 6'6" actor who played the mining head guard in the Star Trek: Enterprise episode "The Xindi". His costume was offered on the It's A Wrap! sale and auction on eBay. 
Freeman was born as Christopher Mark Freeman in Pasadena. He has acted in the films We're Having a Baby (1996), Dead Above Ground (2002, with Corbin Bernsen and stunts by George Colucci, Tom Morga, Leslie Hoffman, Chuck Borden, and Dennis Madalone), Steak & Eggery, and Sin (2003, with Alicia Coppola, Gregg Henry, and Daniel Dae Kim).
Freeman has also guest starred in the television series NYPD Blue (2002, in an episode with Gregory Itzin and Jennifer Tung), Malcolm in the Middle (2003), In Justice (2006, with guest star Anthony Holiday), Numb3rs (2007, with David Clennon, Leslie Silva, and Titus Welliver), Sleeper Cell (starring Henri Lubatti), Dante, and in two episodes of ER (2004 and 2007, with Armin Shimerman and Scott Klace in the previous one and Scott Grimes, Leland Orser, and Clyde Kusatsu in the latter one).
Freeman has also played in several stage plays such as A Midsummer Night's Dream (as Oberon), Of Mice and Men, and Richard III.