"Flash" Teases DC TV Future, Retro Continuity with Multiple Surprise Cameos

SPOILER WARNING: This article contains spoilers for tonight's episode of "The Flash," "Welcome to Earth-2."

Barry Allen showed us quite a bit when he traveled through the Multiverse on tonight's episode of "The Flash."

Not only did we catch a glimpse at Melissa Benoist's "Supergirl," but there were also a few teases at what's to come for the reality-sweeping series -- including a goatee-wearing Green Arrow, Jonah Hex and a Legion ring -- along with confirmation that the CBS "Flash" series exists in the Arrowverse continuity.

Here's everything we saw from the Multiversal jump in the episode...

Green Arrow with a goatee:

We already know this goateed version of Oliver -- based on Frank Miller's "Dark Knight Returns" design -- will appear on "Legends of Tomorrow." Could he also be making a splash on "The Flash?"

Jonah Hex:

And here's our first look at Jonah Hex, to be played by Johnathon Schaech on "Legends of Tomorrow." Perhaps Barry will be taking cues from Rip's team and heading to the Old West sometime soon.

A Legion ring:

Geoff Johns previously hinted at exploring the "Legion of Superheroes" on a DC TV show -- and it looks like "The Flash" is his show of choice.

John Wesley Shipp's Flash:

It's official: The '90s CBS "Flash" series is now in Arrowverse continuity. Shipp's incarnation of "The Flash" got a shoutout in the sequence -- which could be a simple callback, or a hint at his return to the scarlet threads.

So if one old DC show is in Arrowverse continuity, could all of them be? And what about the movies? Time will tell...

"The Flash" airs Tuesdays at 8/7c on The CW.

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