Kenneth Tigar
Kenneth Tigar  is the actor who played the part of Margan in the  first season episode  and Dammar in the  third season episode . Tigar received no screen credit for his first Trek appearance.

Outside of Star Trek, he has made several guest appearances, often playing Mr. Kopeckne, on the television series , starring Ron Glass and James Gregory. He also appeared in an episode of  with Michael Dorn and Robert Pine, an episode of  alongside Scott Bakula and Dean Stockwell, an episode of The Fresh Prince of Bel-Air with Tim Russ, and two episodes of , one featuring Alfre Woodard and another with Marc Alaimo. James B. Sikking starred in both of those episodes, while Barbara Babcock starred in the former. 

Tigar also appeared in the pilot episode of Lois & Clark: The New Adventures of Superman in 1993 (co-starring with Teri Hatcher, K Callan guesting with Christopher Darga and Persis Khambatta) and in the final episode of Murder, She Wrote in 1996 (with William Windom and David Ogden Stiers). He also had recurring roles on the soap opera  and the sitcom  and a regular role as Fritz Heath on , opposite Joan Collins.  

Tigar was one of several Star Trek guest stars to later appear on the 1980s series The Facts of Life, along with William Windom, Roger Perry, Paul Comi, Clyde Kusatsu, Robert DoQui, Nehemiah Persoff, Clive Revill, Eve Smith, Nicholas Coster, Robert Hooks, and Ian Wolfe.  Lead  actor Armin Shimerman also made a brief appearance in the show's seventh season premiere episode.

Tigar made his film debut in the comedy The Happy Hooker (1975), co-starring Richard Lynch and the late Vincent Schiavelli. Since then, he has appeared primarily in made-for-TV movies, although he has made the occasional motion picture, including Creator (1985, co-starring Virginia Madsen, David Ogden Stiers, Ian Wolfe, and Jeff Corey), Phantasm II (1988), Lethal Weapon 2 (1989, with Mark Rolston, Jenette Goldstein, and Sherman Howard), Lethal Weapon 3 (1992, with Vince Howard, Primal Fear (1996, with Terry O'Quinn, Tony Plana, Alfre Woodard, Brian Reddy, Christopher Carroll, Mike Boss, Greg Bronson, and Azalea Davila), and Conspiracy Theory (1997, with Patrick Stewart and Bert Remsen).

Tigar once guest starred in the short-lived series Live Shot. Other Star Trek stars who were cast members include David Birney, Karen Austin, Ron Canada, Jeff Yagher, Bruce McGill and Sam Anderson. Star Trek stars who also guest starred include Casey Biggs, Chase Masterson, Dion Anderson, John Schuck, Lee Arenberg, Hal Landon, Jr. and Cully Fredricksen.

More recently, Tigar had guest roles on the drama series Canterbury's Law (2008) and as Warden Johan Lennox in two episodes of J.J. Abrams' mystery series Fringe (2008, alongside Billy Burke and Philip LeStrange). In 2012, he appeared as the old German man in The Avengers (2012), starring Chris Hemsworth and also featuring Damion Poitier, and from 2013 had the recurring role of Republican Senator Paul Mower in the Amazon series Alpha House.

Other Trek connections 
Additional film and TV projects in which Tigar appeared with other Star Trek performers include:

Feature films 
The Babysitter (1980) with William Shatner
Gangster Wars (1981) with Jonathan Banks
Just One of the Guys (1985) with Clayton Rohner, Leigh J. McCloskey, Stuart Charno, and Katy Boyer
The Runnin' Kind (1989) with Julie Cobb, James Cromwell, and Phil Rubenstein
Snapdragon (1993) with Matt McCoy and Irene Tsu
Jade (1995) with Donna Murphy
Cadillac Ranch (1996) with Christopher Lloyd and Jim Metzler
Riot (1997) with Charles Napier and Patrick Kilpatrick
Hollywood Safari (1997) with John Savage
A Thousand Acres (1997) with John Carroll Lynch and Bob Gunton
A Question of Faith (2000) with Martha Hackett and Randy Oglesby

TV guest appearances 
Barney Miller episode "Werewolf" (1976) with Ron Glass, James Gregory, Jon Lormer, and Janet MacLachlan
Barney Miller episode "The Ghost" (1978) with Ron Glass, James Gregory, and Nehemiah Persoff
The Rockford Files episode "Local Man Eaten by Newspaper" (1978) with Dallas Mitchell and Scott Marlowe
Barnaby Jones episode "Fatal Overture" (1979) with Lee Meriwether, Scott Marlowe, and Earl Boen
Barney Miller episode "Possession" (1981) with Ron Glass, James Gregory, and Phil Rubinstein
Cheers episode "The Boys in the Bar" (1983) with Tim Culbertson and Walter Smith
Scarecrow and Mrs. King episode "Playing Possum" (1984) with John Colicos
Simon & Simon episodes "Simon Without Simon: Part 1" and "Part 2" (1985) with Ray Buktenica
Cheers episode "Don Juan Is Hell" (1985) with Kelsey Grammer)
L.A. Law episode "El Sid" (1986) with Corbin Bernsen
Highway to Heaven episode "Normal People" (1987) with Paul Carr
Night Court episode "Her Honor: Part 4" (1987) with John Larroquette and Alan Oppenheimer
Knots Landing episode "Road Trip" (1990) with Richard Herd
The Flash episode "Alpha" (1991) with Dick Miller
Law & Order episode "God Bless the Child" (1991) with Paul Sorvino
L.A. Law episode "Bare Witness" (1993) with Corbin Bernsen, Larry Drake, Robert Hooks, and Salome Jens
Mad About You episode "The Tape" (1994) with Anne Elizabeth Ramsay
Murder One episode "Chapter Six, Year Two" (1996) with Jack Kehler, Ron Canada, Gregory Itzin, Neal McDonough, and Rick Worthy
7th Heaven episode "Red Tape" (1998) with Stephen Collins and Catherine Hicks
Family Law episode "Family Values" (2000) with Christopher McDonald, Salli Elise Richardson, Penny Johnson, and John Rubinstein
Touched by an Angel episode "Remembering Me: Part 1" (2002) with Paul Winfield

External links 
 
 
 

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Performers
TNG performers
VOY performers