Alex Schomburg was born in Puerto Rico, and moved to Manhattan in the early 1920s as a teenager. Alex and three of his brothers were soon operating a successful commercial art studio. In 1930, he had moved from advertising to illustrating for pulps. As the 1930s ended, he discovered comic books. Comic books only occupied him for a decade, from the late 1930s to the late 1940s. But in that decade, Schomburg drew well over five hundred covers, an average of one a week. The usual pay rate at that time was about sixty-five dollars per cover.
Schomburg's most memorable efforts were for Marvel (then known as Timely) in the years just before and during World War II. He could draw 'Captain America', 'the Human Torch', and 'Sub Mariner', singly or in a team, in the most complex situations. His covers appeared on 'Marvel Mystery Comics', 'Human Torch', 'Sub-Mariner', 'All Winners', 'The Young Allies', and almost every other Timely title. He also made covers for 'Thrilling Comics', 'Exciting Comics', 'Black Terror', 'Speed Comics', 'All New', and 'The Green Hornet'.
After leaving comics in the 1950s, Schomburg devoted his time to illustrating books and science-fiction magazines. He died in 1998.