Marc Guggenheim has decided to come to the rescue of all the fans clamoring for more information about the big Arrowverse cross-over this year, in that he is out and about speaking with IGN about how everything is going to go down, and specifically, how Supergirl is going to fit into everything.

First of all, he wants to make it clear that in his mind, it is a 3 part cross-over, as the ‘Supergirl’ episode of that week will not really be involved in that story, aside from the end where she is called into action, and she leaves to join the gang over on ‘The Flash.’ In his words:

“There’s going to be an episode of Supergirl that ends with Supergirl going over to the crossover. So some people call it a four-way crossover because it involves four shows. My ulcer requires me to call it a three-part crossover. I mean, the story being told has a beginning middle and end. It’s a beginning in Flash, a middle in Arrow, and an end in Legends. But Supergirl is very much a part of the whole thing, so we are crossing over four shows in three parts. How does that sound?”

So how exactly will she be crossing over to ‘The Flash,’ and Earth-Prime? Guggenheim has a pretty simple explanation for that as well:

““I think I can say it… I don’t think it’s that shocking. Last year, Supergirl established that 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. Once the heroes realize that they’re up against aliens, they decide that they need an alien on their side. Fortunately, Barry knows a really nice one…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.”

So, a little disappointing that it is not a true “four part” cross-over event, but clearly we will take everything we can get, and to see all of the heroes working together even across three shows will be pretty incredible. Maybe next year we will see “Earth-CBS” a little more involved in the cross-over fun, but for now, I am very excited to see how they handle this big event, and I hope that the threat is big enough to warrant all of these heroes, and does not feel like overkill.

Do you think Supergirl’s involvement is a little over simplified? Do you wish it felt a little more organic than “We need more firepower, let’s cross dimensions and grab that strong girl?” Share your thoughts on the matter in the comments below!


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Nick is a freelance writer based in Los Angeles, who belongs to the privileged few who enjoyed the ending to ‘Lost.’ For more of Nick’s thoughts and articles, follow him on Twitter