10 Best Ever Live Action Movie Duologies

10. Hellboy & Hellboy II: The Golden Army

Having already made his mark on the superhero genre with Blade Two, Guillermo del Toro upped the ante with the Hellboy franchise. The duology helped solidify Del Toro's career in Hollywood and has many of the classic troupes that he became famous for. If at all anything, the one thing the Hellboy reboot does manage to do is to enhance the two movies' reputation even further.

Lead by the pitch-perfect casting of Ron Perlman, wonderful character designs and superb world-building, it's as good as any in the superhero/fantasy genre. Even though the series ended on an incomplete note as it was supposed to be a trilogy, the second movie did manage to give it some closure. Well, at least a little bit.