The CW’s The Flash is currently filming for their upcoming crossover event, Armageddon. And Saturday morning fans caught the first look at stars on the set including Grant Gustin in a surprising costume.

As fans can see in the image below Gustin’s Barry Allen is suited up in Reverse Flash’s costume. It remains uncertain currently why he would wear this outfit so for now fans will have to speculate.

https://twitter.com/frogphoto/status/1444146035979210761?s=21

Another shot of Grant Gustin in the #ReverseFlash suit. #TheFlash #Armageddon pic.twitter.com/IaXToAIDLa

— Suffering Sappho (@ThemysciraBound) October 2, 2021

READ: ’The Flash’ Set Photos Feature First Look At Ryan Choi As The Atom

Tom Cavanagh‘s Eobard Thawne is also set to appear in the special, so it seems likely he may play a role in this costume change. It should also be noted Gustin’s Flash is wearing the device which helps the speedsters travel through time so fans may expect some time travel in the upcoming special.

Why do you think Grant Gustin’s Barry Allen is dressed as the Reverse Flash? What do you hope to see in The Flash’s Argameddon crossover? Let us know in the comments below!

The Flash returns November 16 to The CW for Argameddon.

The crossover will star Grant Gustin’s The Flash, Javicia Leslie as Batwoman, Cress Williams as Black Lightning, Brandon Routh as The Atom, Chyler Leigh as Sentinel, Kat McNamara as Mia Queen, and Osric Chau as Ryan Choi. And Neil McDonough and Tom Cavanagh return as Damien Darhk and the Reverse Flash.

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