In the 1970s, Marvel attempted to buy DC and all its characters. In true comic fashion, DC screamed “Never!” and sold to Warner Communications instead. Since then, Warner has revived DC franchises with the huge Batman movies and Superman TV shows Lois and Clark and Smallville. Graphic novels from DC and its subsidiary imprints have also been hugely successful, like The Watchmen and The Sandman series, or made into movies, including The League of Extraordinary Gentlemen.
In other words
Marvel Comics : What do you say DC?
DC Comics:
