Andrew Kreisberg Talks The Flash, Arrow, Crossover Episodes, and More — collider.com

Viewers were introduced to Barry Allen (Grant Gustin) during Season 2 of the hit CW drama series Arrow, in a way that made the character both likeable and intriguing, and it was easy to see why he immediately got his own TV show.  With that drama series debuting on October 7th, he’ll get his own backstory and mythology and villains to fight, while also playing into the bigger DC universe and, at times, characters will cross back and forth between the two shows.

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