Jim Starlin entered the comic arena in 1972 working under Roy Thomas and John Romita. Starlin came into the industry at a time when the artists and storytellers were being inspired from the Silver Age. Because of this, he was heavily influenced by Steve Ditko and Jack Kirby.
His first assignment was to draw a few issues of The Amazing Spider-Man and from there, Iron Man. It was during his run on Iron Man that Starlin famously drew Drax The Destroyer and Thanos for the first time.
While working for Marvel in the 1970’s, Jim Starlin also spent time contributing to a few independent publications. These allowed him to test and develop his ideas about God, Death, and the Infinity.
Eventually, he would find his way to working on the Warlock character. During this time, Starlin gave Warlock arguably one of his most notable storylines. In short, he developed a story about Warlock confronting an evil version of himself leading the Universal Church of Truth (a star-spanning empire built on religion). The complexity and themes never witnessed before led Starlin and his books to acquiring a small following.
Throughout the 1980’s, Jim Starlin spent some time working at/on DC, Epic, and Heroes for Hope.
In 1991, Jim Starlin would, as far as I’m concerned, create his crown jewel, The Infinity Gauntlet. This 6-issue series has become one of the most beloved story arcs in comics and, as pointed out, is the focal point of the Marvel Cinematic Universe. After The Infinity Gauntlet, Starlin has spent his time bouncing back and forth between Marvel and DC.
Over his career, Starlin has won multiple awards. Some of these include the Eagle Award, the Bob Clampett Humanitarian Award, the Haxtur Award, and the Inkwell Awards Special Ambassador.