James Montgomery Doohan, born March 3, 1920, in Vancouver, British Columbia, Canada, was a Canadian actor best known for portraying Montgomery "Scotty" Scott in Star Trek: The Original Series. His career spanned over five decades, and he was also a World War II veteran.

     Doohan grew up in Sarnia, Ontario, where he excelled in mathematics and science. In 1939, he enlisted in the Royal Canadian Artillery and served in World War II, participating in the D-Day invasion at Juno Beach. He was wounded by friendly fire, losing a finger, but continued serving as a pilot and artillery officer.

     After the war, Doohan pursued acting, studying at the Neighborhood Playhouse School of the Theatre in New York City. He became a prolific radio and television actor, appearing in The Twilight Zone, Bonanza, and Gunsmoke. In 1966, he was cast as Scotty, the chief engineer of the USS Enterprise, a role that made him an icon. He reprised the character in seven Star Trek films and contributed to the development of the Klingon and Vulcan languages.

     Beyond Star Trek, Doohan appeared in The Bold and the Beautiful, MacGyver, and Knight Rider. He was married three times and had seven children, including Chris Doohan, who later portrayed Scotty in Star Trek Continues. He passed away on July 20, 2005, at age 85, due to pneumonia and Alzheimer's disease.