American actor who played the convict Kuroda Lor-ehn in Canamar and the Klingon captain Magh in The Augments on Star Trek: Enterprise, and Lieutenant Walter Pierce in The Next Generation.
Mark Rolston is an American character actor often cast as villains. His first Star Trek role was Lieutenant Walter Pierce, the engineer whose crime leaves a psychic trace aboard the Enterprise-D, in The Next Generation episode Eye of the Beholder.
On Star Trek: Enterprise he plays Kuroda Lor-ehn in Canamar, a prisoner who seizes control of the Enolian transport carrying the wrongly arrested Archer and Tucker and plans to let it burn up with everyone else aboard.
He returned in the fourth season under Klingon make-up as Captain Magh in The Augments, commander of a warship that encounters Enterprise as it chases Malik's stolen bird-of-prey.