Bert Remsen Actor Bert Remsen portrayed the Bajoran Kubus Oak in the episode . Hailing from Glen Cove , Long Island in New York , Remsen died of heart failure in Sherman Oaks , California . Remsen made his film debut in the 1959 war film " Pork Chop Hill " , in which Paul Comi and Clarence Williams III also appeared . Afterward , he became a cast member on the television series " Twelve O ' Clock High " , starring one - time guest stars Robert Lansing and Frank Overton . In 1964 , he suffered a broken back during an on - set accident and , unable to act , became a casting director . He returned to acting full time in the 1970s . Like his " Deep Space Nine " co - star Rene Auberjonois and " Trek " alumni John Schuck and Sally Kellerman , Remsen appeared in several films by director . He even co - starred with Auberjonois , Schuck , and Kellerman in the films " Brewster McCloud " ( 1970 , also with William Windom ) and " McCabe & Mrs . Miller " ( 1971 ) . In 1971 , he appeared in an episode of " Columbo " alongside William Shatner and Walter Koenig . He also appeared in Altman ' s 1974 films " California Split " , featuring John Winston , and " Thieves Like Us " , with John Schuck , Keith Carradine and Remsen ' s " Collaborator " co - star Louise Fletcher . In 1975 , he had a role in Altman ' s " Nashville " , co - starring Robert DoQui and Henry Gibson , and in 1976 , he was in another Altman film , " Buffalo Bill and the Indians , or Sitting Bull ' s History Lesson " , also featuring Robert DoQui . The last film he made with Altman was 1978 ' s " A Wedding " , co - starring Paul Dooley , Robert Fortier , and Gavan O ' Herlihy ) . Remsen also had recurring role in the 1987 season of " Dallas " , a show that also featured " Trek " guest stars Mitchell Ryan , William Windom , John Anderson , Kathryn Leigh Scott , Mary Crosby , Tracy Scoggins , Joshua Harris , Joseph Campanella , Michele Scarabelli , Allan Miller , and Conroy Gedeon , among others . In 1990 , he appeared in " Peacemaker " , which co - starred Hilary Shepard Turner , as well as the popular film " Dick Tracy " . Also appearing in this film were John Schuck , Seymour Cassel , Paul Sorvino , Robert Costanzo , Hamilton Camp , Michael J . Pollard , Ian Wolfe , and Colm Meaney . In 1994 , he and fellow " Trek " alumni William Marshall and Henry Darrow appeared as poker players in the film " Maverick " . In 1995 , Remsen was a part of the cast of " Dillinger and Capone " , as were F . Murray Abraham , Stephen Davies , Catherine Hicks , Jeffrey Combs , Clint Howard , Joe Maruzzo , and Jessica Hendra . In 1997 , he appeared as a judge in the thriller " Conspiracy Theory " , which starred actor Patrick Stewart . Some of Remsen ' s many other films include " Fuzz " ( 1972 , co - starring Steve Ihnat and Stewart Moss ) , " Harry and Walter Go to New York " ( 1976 , with Ted Cassidy ) , " Inside Moves " ( 1980 , starring John Savage ) , " Places in the Heart " ( 1984 , featuring Terry O ' Quinn ) , " Eye of the Tiger " ( 1986 , with Seymour Cassel ) , " Miss Firecracker " ( 1989 , with Brent Spiner and Alfre Woodard ) , " The Bodyguard " ( 1992 , with Bill Cobbs and Mike Starr ) , " A Walk in the Park " ( 1999 , with Ericka Klein ) , and " Forces of Nature " ( 1999 , with Ronny Cox , Anne Haney , George D . Wallace , Bill Erwin , and Shelly Desai ) .