I thought I'd read it somewhere..
Early in January 2005, Marvel sent NCsoft screenshots of characters it claimed represented copyright infringements, but apparently NCsoft had suspicions that Marvel itself had actually created the heroes it submitted as infringing content.
In a move I’m sure no one expected, NCsoft asked Marvel whether it was responsible for the heroes it had submitted. A month later, Marvel did indeed admit it had created the heroes it alleged to be infringing in four of the images submitted with the complaint