Oz Squad

The titular team

Frank Baum's Oz books (give yourself a pat on the back if you actually knew there was more than one) have fallen into public domain. Like anything in public domain that is even remotely famous, they have numerous adaptions and re-imaginings. Oz Squad is an obscure example I stumbled upon. It re-imagines the Oz original characters as a darker and edgier superhero team.
Premise
The story takes place after the original forty novels and World War II. The Land of Oz (which is now a parallel dimension as opposed to just being a country that hard to reach) is seeking diplomatic relations with Earth. The Oz Squad is a special task force that protects both Oz and America. This team consists of Dorothy, Scarecrow, the no longer cowardly Lion and the Tin Woodsman. However, they have undergone changes: Dorothy is a nearly century-old but retains the body of a young adult, the Scarecrow has become morose, the Lion has gained the ability to assume the form of a human and the Tin Man has been technological updated. All of them now live in America. They mainly battled Rebecca Eastwitch, who is actually the returned Wicked Witch of the East. However, they battle other foes such as Tik-Tok (whose spring now causes him to be moral when it is wind up and evil when its not).
References:
http://www.leftfield.org/~rawdon/comics/reviews/oz.squad.html
http://oz.wikia.com/wiki/Oz_Squad
http://wiki.dorothyandozma.com/index.php/Famous_Forty
http://oz.wikia.com/wiki/Copyright