He sponsored Dr. Manhattan, having been present at the accident that destroyed Jon Osterman, leading to his rebirth as Dr. Manhattan.
In the graphic novel, Glass was the source of the quote "God (later amended by the media to 'The Superman') exists, and he's American." His misgivings over the existence of this godlike being led him to write Doctor Manhattan, Super Powers and the Superpowers.
Dr. Glass does not appear at all in the movie. All his scenes and lines are given to Wally Weaver.
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