American actor and artist, known for Dallas, who played the body-hopping tyrant Tieran in Voyager's Warlord and the murderous former host Joran in Deep Space Nine.
Leigh McCloskey is an American actor, painter and author, known on television as Mitch Cooper in Dallas.
In the third-season Voyager episode Warlord he played Tieran, a deposed Ilari ruler who has survived for two centuries by moving his mind into new bodies. Dying aboard Voyager, he takes over Kes, and McCloskey appears as his former self at the start and in the struggle inside her mind.
He returned to Star Trek in the seventh-season Deep Space Nine episode Field of Fire as Joran, the killer among Dax's past hosts, whom Ezri summons to help her catch a murderer.