Wolfman vs Mayhem vs Moon Knight vs Batman?

Who would win? No prep time and they have there current powers/abilities/weapons
 
Wolfman= http://www.comicvine.com/wolf-man/29-43667/ 
                   http://en.wikipedia.org/wiki/The_Astounding_Wolf-Man 
 
Mayhem= http://www.comicbookresources.com/?page=preview&id=2976 
                    http://www.comicbookresources.com/?page=preview&id=3358 
                     http://www.comicbookresources.com/?page=preview&id=3737 
 
Moon Knight= http://www.comicvine.com/moon-knight/29-1493/ 
                            http://en.wikipedia.org/wiki/Moon_Knight 
 
Batman=  http://www.comicvine.com/batman/29-1699/ 
                  http://en.wikipedia.org/wiki/Batman_(comic_book)
 

 

No doubt batman wins.

Where the hell did Wolfman came into being and is he better than Werewolf by Night?