There is no punchline.

batman: arkham knight (video game)

batman: arkham origins

batman (fictional character)

batman: arkham city (video game)

arkham asylum (fictional setting)

dick grayson (comic book character)

robin (comic book character)

catwoman (comic book character)

gotham city (fictional setting)

samsung electronics (organization founder)

iphone (video game platform)

microsoft windows (operating system)

nightwing

android (operating system)