Bathar

From Memory Alpha, the free Star Trek reference.

Bathar of Hodos was a merchant in the Delta Quadrant who met four members of the USS Voyager crew in 2376. He claimed to have a formula that stopped the aging process. Commander Chakotay remarked that it was only a tripolymer enzyme, but it made a great shoe polish. Captain Kathryn Janeway commented that he was "very photogenic." (VOY: "Memorial")

Bathar was played by an unknown actor.