Jacob Joachim "Jack" Klugman (born April 27, 1922) is an American stage, film and television actor. He is best known as Felix Unger's sloppy roommate Oscar Madison in the American television series The Odd Couple (1970-1975), for his starring role in Quincy, M.E. (1976-1983), and as Juror #5 in 12 Angry Men.

Klugman was born in Philadelphia, the son of Rose, a hat maker, and Max Klugman, a house painter. His parents were Russian Jewish immigrants. He attended Carnegie Institute of Technology, now Carnegie Mellon University, where he graduated in 1948. He began acting after serving in the United States Army during World War II. As a struggling actor in New York City, he roomed with future star Charles Bronson.

In 1954, Klugman played Jim Hanson on the soap opera The Greatest Gift. Also in 1954 Klugman made multiple appearances on the NBC legal drama Justice, starring Gary Merrill and Dane Clark, that was based on cases of the Legal Aid Society of New York.

On September 4, 1955, Klugman and Tony Randall appeared together with Gena Rowlands in the episode entitled "The Pirate's House" of the CBS anthology series, Appointment with Adventure.

David Brenner (born February 4, 1936) is an American standup comedian, actor, author, and filmmaker.

Brenner was born and raised in poor areas of Philadelphia. Unlike many of the other children in his neighborhood, he managed to stay away from too much trouble. His sense of humor led to his immense popularity during his school years, winning Brenner the title of "Class President" every year. After high school he largely hung out on the street corners for two years, followed by two years in the army, serving in the 101st Airborne and as a cryptographer of the 595th Signal Corp in Boblingen, Germany. After being discharged, he attended Temple University where he majored in mass communications, graduating with honors.

After making his national television debut on the The Tonight Show he became the show's most frequent guest with 158 appearances. Since the majority of his jokes deal with current events, mostly political, he has become somewhat of a political pundit, and has been a guest on several news-oriented shows in the recent past, and was also ranked #53 on Comedy Central Presents: 100 Greatest Stand-Ups of All Time." Brenner has appeared more often on major TV Talk Shows than any other entertainer.

Tony Randall (February 26, 1920 – May 17, 2004) was an American actor, comic, producer and director.

Randall was born Arthur Leonard Rosenberg to a Jewish family in Tulsa, Oklahoma, the son of Julia (née Finston) and Mogscha Rosenberg, an art and antiques dealer. He attended Tulsa Central High School.

Randall attended Northwestern University for a year before traveling to New York City to study at the Neighborhood Playhouse School of the Theatre. He studied under Sanford Meisner and choreographer Martha Graham around 1935. As Anthony Randall, he worked onstage opposite stars Jane Cowl in George Bernard Shaw's Candida and Ethel Barrymore in Emlyn Williams's The Corn Is Green. Randall then served for four years with the United States Army Signal Corps in World War II, refusing an entertainment assignment with Special Services. Then he worked at the Olney Theatre in Montgomery County, Maryland before heading back to New York City. Prior to his appearance in "Candida", Randall worked as an announcer at radio station WTAG, Worcester MA.

Mike Douglas (August 11, 1925 – August 11, 2006) was an American "Big Band" era singer, entertainer, and television talk show host.

Douglas was born Michael Delaney Dowd, Jr., in Chicago, Illinois, and began singing as a choirboy. By his teens he was working as a singer on a Lake Michigan dinner cruise ship. After serving briefly in the United States Navy near the end of World War II and as a "staff singer" for WMAQ-TV in Chicago, he moved to Los Angeles. He was on the Ginny Simms radio show. Then, he became a vocalist in the big band of Kay Kyser, with whom he was featured on two notable hits, "Ole [or Old] Buttermilk Sky" in 1946 and "The Old Lamplighter" the following year. Kyser was responsible for giving him his show business name, and he remained part of Kyser's band until Kyser retired from show business in 1951. In 1950, he provided the singing voice of Prince Charming in Walt Disney's Cinderella. In 1950s Douglas, living in Burbank, California, tried to keep his singing career going, working as house singer for a nightclub and going on the road to stay busy. He preferred not to switch to rock and roll, which limited his opportunities as big band music was declining in popularity. In the leanest years, he and his wife survived by successfully "flipping" their Los Angeles homes.

Allen Ludden (October 5, 1917 – June 9, 1981) was an American television personality, emcee and game show host, perhaps most well known for hosting various incarnations of the game show Password between 1961 and 1980.

Allen Packard Ellsworth was born on October 5, 1917, in Mineral Point, Wisconsin, the first child of Elmer Ellsworth, 25, a Nebraska native living in Mineral Point and working as an ice dealer; and his wife Leila M. Allen, age 22, a Wisconsin native and housewife. Elmer Ellsworth died the next winter at age 26, a victim of the worldwide influenza epidemic, on January 6, 1919. When Allen was about five years old, Leila Ellsworth married Homer Ludden Jr., an electrical engineer and the son of H.D. Ludden, the town physician, a Chicago native who had practiced in Mineral Point since 1906. Allen was given his adoptive father's name and became Allen Ellsworth Ludden. The family lived briefly in the small Wisconsin towns of Janesville, Elkhorn, Antigo and Waupaca before moving to Texas when Allen was still a small child.