Compare John Constantine vs Mercedes Merced real name and family and other exciting information. We are also providing you with the comparison of alias, alter ego, family tree and love Interest of both the characters along with John Constantine Real Name vs Mercedes Merced Real Name. You can also check out the comparison list of artists who played John Constantine and Mercedes Merced in movies, animated films and TV series. Also compare the identity of these popular fictional characters in John Constantine vs Mercedes Merced real name.