A Delta Quadrant confidence trickster who, in 2376, poses as Commander Chakotay alongside two partners playing Janeway and Tuvok, swindling traders in the name of the Federation.
Zar appears in the sixth-season Voyager episode Live Fast and Prosper, played by Francis Guinan. With his partners Dala and Mobar he first tricks Tom Paris and Neelix while posing as a cleric caring for orphans, and uses the encounter to copy the Delta Flyer's database.
Armed with that information, the trio dress in imitation Starfleet uniforms and pass themselves off as Voyager's senior officers. Zar plays the first officer to Dala's Captain Janeway, selling worthless goods and false promises of Federation membership to miners and traders, who then blame the real Voyager.
After Dala is captured and allowed to escape as part of a counter-trick by Paris, Neelix and the Doctor, Zar and Mobar are caught at their hiding place and the stolen property is recovered.