The company began to move aggressively against what it saw as copyright-violating imitations from other companies, such as Fox Comics' Wonder Man, which (according to court testimony) Fox started as a copy of Superman. This extended to DC suing Fawcett Comics over Captain Marvel, at the time comics' top-selling character (see "National Comics Publications, Inc. v. Fawcett Publications, Inc."). Faced with declining sales and the prospect of bankruptcy if it lost, Fawcett capitulated in 1953 and ceased publishing comics. Years later, Fawcett sold the rights for Captain Marvel to DC—which in 1972 revived Captain Marvel in the new title "Shazam!" featuring artwork by his creator, C. C. Beck. In the meantime, the abandoned trademark had been seized by Marvel Comics in 1967, with the creation of their Captain Marvel, forbidding the DC comic itself to be called that. While Captain Marvel did not recapture his old popularity, he later appeared in a Saturday morning live action TV adaptation and gained a prominent place in the mainstream continuity DC calls the DC Universe.