John Rowe notes that Cartoon Network's Justice League Unlimited is making liberal use of Steve Ditko's Objectivist-tinged superhero The Question (inspiration for Watchmen's Rorschach), and they're kept his Randian philosophizing intact. In a recent episode, Rowe notes, he offers this nugget:
Everything that exists has a specific nature. Each entity exists as something in particular and has characteristics that are part of what it is. A is A, and no matter what reality he calls home, Luthor is Luthor.
Which undoubtedly makes him the most self-consciously Randian superhero since John Bergstrom's Libertarian Man.