(written from a Production point of view)
Joseph Hindy (born 1939) is the actor who played Prah Mantoos in the Star Trek: Enterprise first season episode "Cold Front" in 2001. His costume from this episode was later sold off on the It's A Wrap! sale and auction on eBay. 
Hindy made his feature film acting debut in the 1970 comedy Lovers and Other Strangers, which featured cinematography by Star Trek V: The Final Frontier's Andrew Laszlo. Later that same year, Hindy was an understudy in a Tony Award-nominated Broadway revival of the play Hay Fever.
In 1971, Hindy appeared with TOS guest star Lee Meriwether in an episode of The F.B.I. and with Alex Henteloff in an episode of Ironside. Hindy and TOS guest actress Louise Sorel played husband and wife in the 1973 made-for-TV movie The Return of Charlie Chan.
Hindy next appeared in the second Six Million Dollar Man TV movie, Wine, Women and War (co-starring Lee Bergere and Alan Oppenheimer and directed by Russ Mayberry). He was then seen in a PBS production of Arthur Miller's play, Incident at Vichy, starring Rene Auberjonois, Lee Bergere, Andrew Robinson, and Harris Yulin.
In 1979, Hindy briefly assumed the regular role of Burt McGowan on the long-running NBC daytime drama Another World. He also made repeated performances on television shows such as Gunsmoke (two episodes, including one with William Lucking and Morgan Woodward), Mannix (two episodes: one with John Colicos and another with John McLiam and Madlyn Rhue), and Kojak (three episodes, including one with Mark Margolis).
In addition, Hindy has made one-time appearances on series such as The Streets of San Francisco (with Eugene Roche), The Rockford Files (with Scott Marlowe, Dallas Mitchell, and Kenneth Tigar), and Knight Rider (co-starring George Murdock and directed by Winrich Kolbe). He also appeared in an episode of Kate Mulgrew's short-lived detective series Mrs. Columbo, in an episode co-starring the aforementioned Andrew Robinson.
Hindy's more recent television work includes two appearances on The Equalizer (working with Jacqueline Brookes, Robert Joy, Matthew Kimbrough, and Don McManus), the pilot for the short-lived FOX series Against the Law (starring Fritz Weaver), and an episode of Judging Amy. He has also made three appearances on the long-running NBC series Law & Order. He first appeared on the show in 1992, when Paul Sorvino was the show's star. Hindy returned to the show (as different characters) in episodes aired in 2000 and 2004.
In 1984, Hindy made his first feature film appearance in fourteen years with a supporting role in the comic thriller Crackers, co-starring Wallace Shawn and Darryl Henriques. Hindy then appeared in the 1986 thriller Where Are the Children? His most recent film credits were the crime drama, Simpatico, and the Academy Award-nominated thriller, The Insider, both released in 1999. The latter film co-starred Bruce McGill and Christopher Plummer.