Watch a Sneak Peek of Vixen, DC's First African-American Female Superhero

Part of Warner Bros. and DC Comic's mega-panel of all their new shows at Comic-Con on Saturday was the digital-only animated series Vixen.

Megalyn Echikunwoke will voice Mari Jiwe McCabe, AKA Vixen, who wears the "Tantu Totem," a necklace with mystical powers that was passed down through her family. Vixen was the first African-American female superhero in DC Comics. She's expected to make cameos on Arrow and The Flash in their upcoming seasons.

Stephen Amell and Emily Bett Rickards of Arrow and Grant Gustin and Carlos Valdez of The Flash will lend their voices to the cartoon versions of their characters.

Check out the teaser:

Vixen will premiere Aug. 25 online on CW Seed.

(Full disclosure: TVGuide.com is owned by CBS, which is a joint owner of The CW.)