(written from a Production point of view)
Curtis Wong is an actor who worked on several episodes of Star Trek: Voyager and Star Trek: Enterprise. He appeared as a Klingon in the Star Trek: Enterprise pilot "Broken Bow". He then appeared in the episode "Damage" as an Illyrian and in the episode "In a Mirror, Darkly" as the dead crewmember discovered aboard the USS Defiant with a phaser wound to the chest.
The costume Wong wore in "Damage" was sold at the It's A Wrap! sale and auction on 16 February 2007 for US$191.50.  The TOS-style Starfleet lieutenant's uniform he wore in "In a Mirror, Darkly" sold for US$2,125 on 8 June 2007. 
Wong also played a Klingon on the show at one time. A pair of Klingon boots with a costumer's tag bearing his name was sold at It's a Wrap! for US$385.  The Klingon costume worn by Wong was sold for US$455.