Superman - Inspiring a market

The character's initial success led to similar characters being created. Batman was the first to follow, Bob Kane commenting to Vin Sullivan that given the "kind of money (Siegel and Shuster were earning) you'll have one on Monday". Victor Fox, an accountant for DC, also noticed the revenue such comics generated, and commissioned Will Eisner to create a deliberately similar character to Superman. Wonder Man was published in May 1939, and although DC successfully sued, claiming plagiarism, Fox had decided to cease publishing the character. Fox later had more success with the Blue Beetle. Fawcett Comics' Captain Marvel, launched in 1940, was Superman's main rival for popularity throughout the 1940s, and was again the subject of a lawsuit, which Fawcett eventually settled in 1953, a settlement which involved the cessation of the publication of the character's adventures. Superhero comics are now established as the dominant genre in American comic book publishing, with many thousands of characters in the tradition having been created in the years since Superman's creation.