Posted by David Opie @DavidOpie
The day someone green-lights a Marvel Zombies Ghibli film directed by Xavier Dolan is the day I will be happy. Any day now...
David Opie

Let's hope National City has stocked up on some more real estate, because the cast of Supergirl seems to have tripled since the show left CBS and joined the CW. From new supporting characters such as Snapper Carr to new heroes like Miss Martian, fans have plenty to be excited about when Season 2 of Supergirl soars onto our screens on October 10.

[Via CW]
[Via CW]

In the meantime, The CW have relased a new promo that puts the spotlight firmly on Kara and her relationship with the most important new arrival of all, Superman. Tyler Hoechlin already seems perfect in the role and if there's going to be any animosity or rivalry between the two super-powered cousins, we haven't seen it yet.

Superman's Not The Only Big Name Who Could Visit National City Though

However, if you paid close attention to the trailer, the home of another famous hero is explicitly name dropped towards the end, right after a distraught family narrowly avoid death at the hands of an explosion:

Now, unless some debris hit the guy on the head and caused him to hallucinate, that's confirmation that Gotham City on Supergirl's world. This holds huge ramifications for the Arrowverse at large — and perhaps even the DCEU too.

Never say never, Kara. [Via CW]
Never say never, Kara. [Via CW]

Does This Mean That Gotham-Based Characters Could Cross Over Into The Arrowverse?

[Via DC Comics]
[Via DC Comics]

So far, the only crossover that's occurred between the Arrowverse and Batman's home was when the corporate logo for Queen Consolidated accidentally appeared on a sky line during Gotham's second episode. Aside from that, there's been no mention of Gotham City itself until now — although a new addition to Arrow called Ragman does hail from Gotham in the comics.

Whether this clip is taken from an episode of Supergirl set before or after her Earth crosses over somehow with the rest of the Arrowverse, there's now clear potential for the CW to introduce a whole new set of beloved characters from the Bat-Family.

Which Members Of The Bat-Family Could Appear In The Arrowverse?

[Via DC Comics]
[Via DC Comics]

While there's a host of Gotham-based characters who could arrive in National City, including the likes of Nightwing and Oracle, the two most likely candidates for a future appearance are Batman and Batwoman.

We'd love to see Batman's cynical outlook play off against Kara's relentless optimism on the show, but maybe with less Krypto:

The problem with using Bruce Wayne though is that he's arguably too big of a name to include, especially considering the prominent role he now plays in the DCEU. Saying that though, a small screen rematch between Batman and Superman could still be an intriguing prospect, especially for those who found Zack Snyder's brawl-fest a bit lacking.

[Via Warner Bros.]
[Via Warner Bros.]

Instead, it seems far more likely that Batwoman could become the biggest link between Gotham City and the rest of the Arrowverse. Rumors already hinted that Kate Kane could appear on Supergirl after it was confirmed that detective Maggie Sawyer will play a recurring role in Season 2. After all, the two crime-fighters share a romantic history in the comics, so it's not absurd to imagine Batwoman following Sawyer to National City. What remains to be seen though is whether Kate will suit up and join Kara for some good old-fashioned vigilantism, or whether she'll simply play a stripped-down, civilian role.

[Via DC Comics]
[Via DC Comics]

See also:

Either way though, the inclusion of Gotham City in the Arrowverse opens up an astounding amount of possibilities that the CW can play with in terms of both characters and iconic comic-book story lines. With the mention of just one simple word, the Arrowverse has suddenly grown a whole lot bigger and we couldn't be more excited to see where this leads.

Poll

Which Gotham-based characters would you like to see appear in the Arrowverse?