Want this question answered?
Batman has the largest for DC & Spider-Man has the largest for Marvel.
No, Batman was originally created by cartoonist Bob Kane and published by DC comics. Marvel is a completely separate thing however I understand your confusion as Marvel are well known for their super heroes. Their most famous include Spiderman, green lantern and the fantastic four.
batman
batman
Probably Spider-man.
spiderman
Along with Superman, Batman is the most famous DC Comics superhero.
Emma Frost started out as a villain for most of her life but in most Marvel realities she later joins the X-Men and becomes a superhero.
The names of most Marvel games are from the characters of most Marvel sponsored shows or films like Batman, Cat Woman, Wonder Woman and other characters from Marvel.
I would believe either Superman or Batman.
There's no real consensus but I'd suspect Spider-Man could be the most "famous".
Wolverine for Marvel Batman for DC