(written from a Production point of view)
Buddy Garion (born 1924 - died 27 June 2013, age 89) was the actor who played Karf in the Star Trek: The Original Series second season episode "A Piece of the Action". He filmed his scenes on Tuesday 7 November 1967 and Wednesday 8 November 1967 at Desilu Stage 11 and on location at Paramount's Boston Street backlot.
Garion's other television credits include appearances on Dr. Kildare, Burke's Law, Matlock (in an episode with Michael Durrell), and The A-Team, the latter of which co-starred Lance LeGault, William Lucking, Charles Napier, and Dwight Schultz. He was also seen in the 1974 television movie The Death Squad, along with Julie Cobb, George Murdock, Bert Remsen, and Kenneth Tobey.
In addition, he had roles in the feature films Ice Station Zebra (1968, co-starring Joseph Bernard, Lloyd Haynes, Jonathan Lippe, William O'Connell), Marlowe (1969, with Kenneth Tobey and Jason Wingreen), and The Big Picture (1989, with Stephen Collins, Teri Hatcher, Stan Ivar, and Michael McKean).
His last known screen appearances were episodes of That's Life (2000, with Paul Sorvino and Frank Kopyc), Little Britain USA (2008), and Tim and Eric Awesome Show, Great Job! (2009, with Donald R. Jankiewicz and Patrick Jankiewicz).