Lloyd Haynes Samuel Lloyd Haynes , better known simply as Lloyd Haynes , was the actor who played Lieutenant Alden in , the second pilot episode of . Alden was one of his first television roles . He is best known for playing high school teacher Pete Dixon in the television series " Room 222 " from 1969 through 1974 . Personal life . Haynes was born in South Bend , Indiana , on 19 September 1934 . He served in the Marine Corps from 1952 through 1964 and fought in the Korean War . He was also a public - affairs officer for the United States Navy Reserve , holding the rank of commander . Following his military service , Haynes studied acting at the Film Industries Workshop and Actors West in Los Angeles , California . He married and divorced twice ; his third marriage to Carolyn Inglis produced one child . Haynes died of lung cancer in Coronado , California , on 31 December 1986 . He was 52 years old . He is interred at Eternal Hills Memorial Park in Oceanside , California . Career . Television . Haynes began acting in television shows in 1965 , making his first appearance in January 1966 on an episode of " The Fugitive " . That episode ' s director , Richard Donner , then cast Haynes in an episode of " The F . B . I . " , a crime drama on which Stephen Brooks was a regular cast member . In the episode , " The Spy - Master " , Haynes and TOS guest actor William Wintersole played two of three unnamed Special Agents . Also appearing in Haynes ' episode of " The F . B . I . " were Whit Bissell and Keye Luke . In September 1966 , Haynes made a second appearance on " The Fugitive " , in an episode with William Bramley , Peter Brocco , Ted Gehring , and Michael Strong . Haynes again appeared with Peter Brocco in a 1966 segment of " Bob Hope Presents the Chrysler Theatre " written by Richard Matheson . A third episode of " The Fugitive " followed for Haynes in August 1967 , which also featured Joseph Campanella , Seymour Cassel , Paul Comi , Paul Sorensen , and Arch Whiting . Haynes played the role of Lord Chancellor in two back - to - back episodes of " Batman " in March 1967 , working alongside fellow TOS performers Lee Meriwether and Grace Lee Whitney . That same month , Haynes appeared on " The Green Hornet " in a two - part episode with Arthur Batanides . Haynes then made several appearances on the " Tarzan " series , working with James Gregory and William Marshall . Haynes again worked with James Gregory in a 1968 episode of " Lancer " . From 1969 through 1974 , Haynes starred as high school teacher Pete Dixon in the Emmy Award - winning comedy - drama series " Room 222 " . Haynes himself received an Emmy Award nomination for his work on this series , as well as a Golden Globe nomination . In 2006 , Haynes received a posthumous nomination from the TV Land Awards in the " Teacher of the Year " category for his role on " Room 222 " . Several " Star Trek " alumni made appearances on " Room 222 " , including Ed Begley , Jr . , Teri Garr , and Jan Shutan . In 1971 , Haynes reteamed with his TOS co - star Leonard Nimoy on the TV movie " Assault on the Wayne " , which also starred William Windom , Malachi Throne , and John Winston . After " Room 222 " ended its run in 1974 , Haynes guest - starred on such television series as " Emergency ! " ( with Kevin Tighe ) , " Marcus Welby , M . D . " ( with Richard Derr ) , and " T . J . Hooker " ( with William Shatner , James Darren , Richard Herd , Marc Alaimo , and Robert O ' Reilly ) . In 1981 , Haynes had a recurring role as Judge Horatio Quinlan on the prime - time soap opera " Dynasty " , which starred Joan Collins and , at the time , Lee Bergere . That same year , Haynes co - starred with Dean Stockwell and Joy Garrett in the TV movie " Born to Be Sold " . Haynes ' last role was that of " Ken Morgan " on the soap opera " General Hospital " , from 1984 until his death from cancer in 1986 . He was 52 years old . Films . Following the airing of the second " Star Trek " pilot in 1966 , Haynes appeared in several films . His first was the 1968 crime drama " Madigan " , in which he co - starred with fellow TOS performers Michael Dunn , Steve Ihnat , Warren Stevens , Dallas Mitchell , Gloria Calomee , and William Bramley . actor Paul Sorenson , guest actor John McLiam , and co - star Albert Henderson also appeared in this film . That same year , Haynes and fellow " Trek " alumnni Joseph Bernard , William O ' Connell , Jonathan Lippe , Michael Rougas , Buddy Garion , Gary Downey , and Jim Goodwin worked together on the action thriller " Ice Station Zebra " . This was followed in 1969 with a supporting role in the horror film " The Mad Room " . In 1977 , Haynes played boxer Muhammad Ali ' s manager in the biographical film " The Greatest " , co - starring Paul Winfield , David Huddleston , Malachi Throne , Skip Homeier , and David Clennon . Haynes ' last feature film was the 1978 action - thriller " Good Guys Wear Black " , which also featured Don Pike and David Starwalt .