Assuming he doesn’t have a red phone line directly to Batman like in the old TV show, obviously.

  • Sai Somsphet@lemmy.zip
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    1 year ago

    He just stands on the roof and yells.

    Superman hears the yelling and send a text to Diana.

    Diana writes a letter and gives it to Flash.

    Flash starts breaking the speed limit.

    Batman trips Flash,who then gives Batman the letter.

    Really it’s actually much faster then the batsignal, and Bruce Wayne has promised to pay for Superman’s phone bill.