Boliska

From Memory Alpha, the free Star Trek reference.

Boliska was a 24th century Starfleet command division crewman serving aboard the USS Enterprise-D in 2365. He was an old acquaintance of Kyle Riker's.

That year, when Riker came aboard the Enterprise-D to brief his son about the USS Aries, Boliska greeted Riker with a handshake near a table of two other female acquaintance in Ten Forward. Moments later Riker spotted Katherine Pulaski and left his three acquaintances to greet his old friend. (TNG: "The Icarus Factor")

Boliska, who was portrayed by an unknown actor, was identified in the episodes' script. In a line appearing in the script, but cut from (or unintelligible in) the filmed episode, Kyle Riker states, "Boliska! What in the name of the Federation are you doing here?"