It seems that Bruce Willis' John McClane might square off with yet another villainous sibling of Hans Gruber in Die Hard 5. Alan Rickman portrayed Hans Gruber in the original Die Hard and Jeremy Irons played Hans' brother, Simon, in Die Hard With a Vengeance.
It isn't known if this will be another brother of Hans, or if Hans' sister will appear as the Die Hard 5 villain. It's also possible that a son or daughter of Hans Gruber could be the main bad guy.
Bruce Willis recently revealed that a script for Die Hard 5 is finished and that the sequel will likely shoot sometime in 2011. We reported in October that Bruce Willis wants to come back for Die Hard 5 and Die Hard 6, after which he will retire the character.
It still isn't known when production will start on Die Hard 5.