“Arrow” executive producer Marc Guggenheim revealed the technology that allowed Barry Allen (Grant Gustin) to visit the alternate universe where Kara Danvers (Melissa Benoist) resides back in Season 1 of “Supergirl,” when it was still on CBS, will be key to bringing the Girl of Steel into the Arrowverse for the annual crossover event.
“Last year, ‘Supergirl’ established that the Flash was able to make his way to what I call ‘Earth CBS,’ and it stands to reason that, with the proper breach technology, the reverse can happen,” Guggeinheim told reporters following a screening Tuesday.
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“I don’t think it’s a big shock that between Barry and Cisco and all their experiences with Earth 2 and the multiverse, that they can pluck her from ‘Earth CBS,'” Guggenheim concluded.
The “Arrow” episode of the crossover will also mark the show’s 100th episode, and Guggenheim also revealed they will bring back villains John Barrowman and Neal McDonough as Malcolm Merlyn and Damien Darhk, respectively.
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