Warren Stevens Actor Warren Albert Stevens appeared as the Kelvan named Rojan in the second season episode . He filmed his scenes between Friday and Friday at Desilu Stage 9 and Stage 10 . Stevens enrolled at the United States Naval Academy in 1937 , serving at least three and half years as a midshipman . Sometime between 1939 and 1940 , he was disenrolled from the Academy due to vision problems , but later joined the US Army Air Corps and served as a pilot during World War II . Stevens has had supporting roles in dozens of films throughout his long career . Most notable among these is the 1956 science fiction classic " Forbidden Planet " , as the Cruiser C57 - D ' s medical officer , Dr . Ostrow . guest actors George D . Wallace and William Boyett , as well as TOS guest Morgan Jones , also had roles in the film . One of Stevens ' earliest films was 1951 ' s " The Frogmen " , in which he co - starred with Jeffrey Hunter , the man who was to originally star in the original " Star Trek " . Fellow TOS guest actor James Gregory also appeared in this film . Stevens co - starred with Hunter again the following year in the film " Red Skies of Montana " , which also featured Lawrence Dobkin . That same year , Stevens and fellow TOS guest actor Davis Roberts appeared in the film " Phone Call from a Stranger " . Other film credits include " The Barefoot Contessa " ( 1954 ) , " No Name on the Bullet " ( 1959 , with Whit Bissell ) , " 40 Pounds of Trouble " ( 1962 , with Paul Comi ) , " Madame X " ( 1966 , with Ricardo Montalban ) , and " An American Dream " ( 1966 , with George Takei ) . Stevens was also among many " Trek " alumni to appear in the 1968 film " Madigan " . Others who appeared in this film include Michael Dunn , Steve Ihnat , Lloyd Haynes , Gloria Calomee , and Albert Henderson . Stevens also appeared in the 1983 racing comedy " Stroker Ace " , which was directed by Hal Needham and co - produced by Laurel Goodwin . His most recent feature film credit is 2007 ' s " Carts " . Including his lone appearance on " Star Trek " , Stevens has made more than 150 television guest appearances , including stints on ( in an episode directed by John Newland and co - starring Barry Atwater , Arthur Batanides , and Newland ) , ( in an episode with Paul Carr and Kenneth Mars ) , ( including an episode directed by Marc Daniels and co - starring James B . Sikking ) , ( four episodes , working with Michael Forest , Gene Lyons , Diana Muldaur , Bert Remsen , and Harris Yulin ) and ( including a two - parter with Antoinette Bower , Sid Haig , and Percy Rodriguez ) . In 1962 , he co - starred in an episode of ( " Dead Man ' s Shoes " ) with one - time TOS guest star Joan Marshall ( ) . He also appeared in the original series episode " " in 1964 . Stevens was also a regular guest performer in producer ' s sci - fi shows , making an appearance in , starring James Darren , Lee Meriwether , and Whit Bissell in 1966 , and two appearances in in 1968 - 69 , starring Don Marshall , and other guest performers including Rex Holman and Bart LaRue . After having made three appearances on Richard Boone ' s show " Have Gun - Will Travel " ( one of which was written by its head writer , Gene Roddenberry ) , Stevens was a regular performer on the program Boone did immediately after that , " The Richard Boone Show " ( 1964 - 65 ) . Stevens then co - starred with DeForest Kelley on a 1966 episode of " The Man from Shenandoah " directed by Jud Taylor . That episode also featured Elisha Cook . Stevens also worked with his fellow " By Any Other Name " guest star , Julie Cobb , in a 1969 episode of " Marcus Welby , M . D . " In addition , Stevens and Madlyn Rhue were regulars on the short - lived NBC comedy series " Bracken ' s World " . Later , Stevens , along with Julie Parrish and John Hoyt , was a part of the original cast of " Return to Peyton Place " ( 1972 - 74 ) . James Doohan briefly joined the cast of the latter series in 1974 , some six years after working with Stevens on " Star Trek " . In 1979 , he was part of the cast of the TV mini - series " The Rebels " , as were Kim Cattrall , Paul Fix , and Nehemiah Persoff . The following year , he co - starred with the late Madge Sinclair in a TV movie called " High Ice " . In 1981 , Stevens and Joanne Linville were regulars on the short - lived CBS series " Behind the Screen " . Stevens then appeared in two episodes of " Falcon Crest " , working with Robert Foxworth . One episode was directed by Reza Badiyi . Stevens was friends with the late Kenneth Tobey , who appeared in the episode . Stevens died of lung disease in Sherman Oaks , California on 27 March 2012 . He was 92 .