American actor, known as Bulldog Briscoe in Frasier, who played Steth, a body-stealing alien pilot who swaps places with Tom Paris, in the Voyager episode Vis à Vis.
Dan Butler is an American actor and playwright best known as the sports presenter Bob Briscoe, nicknamed Bulldog, in Frasier.
In the fourth-season Voyager episode Vis à Vis he played Steth, a charming test pilot whose ship has an experimental coaxial warp drive. Tom Paris, restless and neglecting his duties, eagerly helps with repairs.
Steth is in fact an impostor who moves from body to body by exchanging genetic material. He takes Paris's form and place aboard Voyager, leaving Paris trapped in Steth's body, so Butler spends much of the episode playing Tom Paris in another man's skin.