As we've speculated before, Brandon Routh's Ray Palmer will not only show up in Central City on The Flash, but he'll do so in costume as The Atom.
That's confirmed today by an Instagram post from The Flash star Grant Gustin, who shows the A.T.O.M. exosuit and The Flash's costume both on display in S.T.A.R. Labs.
The A.T.O.M. costume was just officially unveiled today.
Palmer and Felicity Smoak will appear in the upcoming, eighteenth episode of The Flash, titled "All-Star Team Up," in which they'll face off against a pair of threats that appear to be Arrowverse version of the Bug-Eyed Bandit and Red Bee. We had previously speculated that the episode might see a powered-up version of The Atom.