American character actor, later acclaimed as Hector Salamanca in Breaking Bad, who played the scientist Dr Nel Apgar in the Next Generation episode A Matter of Perspective.
Mark Margolis (1939 to 2023) was an American character actor. He appeared in Scarface and in most of Darren Aronofsky's films, and earned an Emmy nomination as the mute Hector Salamanca in Breaking Bad, a role he continued in Better Call Saul.
In the third-season Next Generation episode A Matter of Perspective he plays Dr Nel Apgar, a Tanugan scientist developing Krieger wave technology on a space station that explodes just as Riker beams away.
Apgar is seen in conflicting holodeck reconstructions of the same events, which finally show that he died trying to kill Riker.