Growing up in an inner-city tenement block in Glasgow during the second world war, some of Montgomery Scott's earliest memories were of the Clydebank Blitz. His father, a welder by trade, was killed in the run on the John Brown & Co shipyards in 1941; his older brother, who had left to fight in the war, never came home.
When the war was over - feeling there was nothing left for them in Glasgow with most of the family dead and their home destroyed - Eilean Scott emigrated to America, taking her surviving son with her. They settled in Pleasantville, Eilean taking a job as a waitress to support them. From a young age, Scotty showed every indication of having inherited his father's gift with machinery. He left high school at seventeen with straight A's and a full scholarship to the local college. Now at 21 he is in the final year of a degree in Engineering, with every intention of going on to obtain a doctorate.
He has a casual friendship with Jim Kirk, and through him Pavel Chekov; Kirk picked him up when he was trying to hitch a ride in a storm one miserable winter, in exchange for which Scotty helped him fix up his bike. He also has refreshingly few qualms about supplying Kirk and his friends with alcohol...or anything else they fancy, for that matter.