Monsters Beware the Batman : Season 1 Episode 17

Batman and Katana team up with Rex Mason, also known as the "Golem of Old Gotham", as they combat an increasing army of armored thugs that have been terrorizing several parts of Old Gotham. In addition, they also dodge Harvey Dent's newly-created Special Crimes Unit, which is ordered to take down both the armored criminals and the vigilantes fighting them.