The Flash makes an appearance on Arrow. Are you ready?
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The Arrow is armed and ready, backed by The Flash.
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The Flash and The Arrow prepare to fight a common enemy.
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It appears Oliver and Barry parted as friends from The Flash crossover ep!
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It's nice to see a The Arrow in a different light.
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The Arrow, Arsenal and Diggle are on the job. Hooray!
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Yup, that's The Flash on Arrow. This is a photo from the back half of the crossover event.
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Is this leading somewhere before the date even begins?
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Arrow Quotes

Diggle: I see you brought your plus one.
Ray: Nice to meet you. Ray Palmer.
Diggle: John Diggle. [whispering into Ray's ear] You hurt her, they'll never find your body. [louder] Nice to meet you!

There is a prophecy. The man who doesn't perish at the blade of Ra'a al Ghul will become Ra's al Ghul. Ra's al Ghul doesn't offer, he orders. Oliver! Don't delude yourself into thinking you have a choice.

Malcolm