Tonight, "Arrow" and "Legends of Tomorrow" executive producer Marc Guggenheim shared concept art of Felicity wearing a black mask and a purple cape. The post did not say which character Emily Bett Rickards will be playing, but it did confirm she will be appearing in the upcoming "Legends of Tomorrow" episode "Doomworld."

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Felicity's costume was designed by Maya Mani and drawn by Andy Poon. The pair previously collaborated on designs for Hawkgirl, White Canary, the Atom, Firestorm, Vixen, and more.

This week on "Legends of Tomorrow," the Legion of Doom successfully assembled the Spear of Destiny. That gave them the power to rewrite reality itself. Their new Doom-world order will explore a variety of changes in the DCTV universe, including that of Felicity Smoak, Laurel Lance, and the crew of the Waverider.

According to the episode description, "Doomworld" will show the DCTV reality completely rewritten:

DOOMWORLD - After obtaining the Spear of Destiny, the Legion of Doom rewrites reality, leaving the Legends changed, perhaps forever. Frightfully, the Legends' and the world's hopes rest with Rory, but being the "hero" is not easy for him. Meanwhile, there is tension within the Legion of Doom and the reason why the Spear of Destiny needs to be destroyed is revealed.

Airing Tuesdays at 9 pm ET/PT on The CW, “DC’s Legends of Tomorrow” stars Brandon Routh as the Atom, Victor Garber and Franz Drameh as Firestorm, Caity Lotz as White Canary, Maisie Richardson-Seller as Vixen, Dominic Purcell as Heatwave and Nick Zano as Citizen Steel.