Petty Officer, 1st Class Moonsafi was a male Starfleet sciences division crewman who served during the late 23rd century. (Star Trek VI: The Undiscovered Country)
Moonsafi's name comes from the name tag that was included along with a Starfleet uniform sold on It's A Wrap! sale and auction, as well as an individually sold name tag. [1]
He was played by one of several unknown actors who served aboard either the USS Enterprise-A or USS Excelsior.