father son relationship   helicopter   oil rig   katana   sword fight   cage   based on comic   batman   ninja   father son reunion   actress voicing multiple characters   bat cave   bat computer   batmobile   deathstroke   family held hostage   genetically modified organism   grandfather killed   killer croc   man bat   man wearing an eyepatch   mother shot   nightwing   robin the character   underwater base   actor voicing multiple characters   league of assassins   based on comic book   dc comics   superhero   stabbed in the eye   shark   sword   pistol