Petty Officer, 1st Class Pashtor was a Starfleet operations division crewman who served during the late 23rd century. (Star Trek VI: The Undiscovered Country)
Pashtor's name comes from the nametag that was included along with a Starfleet radiological suit sold on It's A Wrap! sale and auction. [1]
This character was played by one of several unknown performers who served aboard either the USS Enterprise-A or USS Excelsior.