Marv Wolfman is still an acclaimed writer of comicbooks, most famous for his runs on Teen Titans and Tomb of Dracula, the latter is where he co-created Blade.
He also aided John Byrne in the overhaul of the Superman, especially in suggesting that the Man of Steel's archenemy, Lex Luthor, be changed from an standard mad scientist character to the head of a mega corporation, Lexcorp.
He also wrote "The Crisis of Infinite Earths" limited comic book series for DC Comics which enabled the company to update its classic superhero characters.