(written from a Production point of view)
Dennis C. Ott (13 June 1958 – 3 November 1994; age 36) was an actor and stuntman who played the horned alien who fought against Kirk on Rura Penthe in Star Trek VI: The Undiscovered Country.
He appeared in several movies, mostly in bit parts. Because of his height of 6'11" he is easy to spot in productions in which he had performed. Among the other films in which he appeared are Police Academy 6: City Under Siege (co-starring David Graf, Arthur Batanides, Gerrit Graham, Darryl Henriques, Kenneth Mars, and Matt McCoy), Road House (with Anthony De Longis, Tiny Ron, Marshall R. Teague, and Kevin Tighe), The Doors (with Titus Welliver), and Bill & Ted's Bogus Journey (with Roy Brocksmith and William Sadler).
Ott died of AIDS in his hometown of Philadelphia, Pennsylvania in 1994.