After Deepika, Priyanka, Amy Jackson becomes latest to star in international project
The British-born actor will make her debut in season three as Imra Ardeen, aka Saturn Girl, a kind, smart, and strong-willed hero who uses her telekinetic ability to help those in need, reported Deadline.
She was born on Titan, one of Saturn's moons, and arrives on Earth to help Supergirl (Melissa Benoist) battle one of her biggest threats.
In the comics, Saturn Girl is a member of the Legion of Superheroes, a 31st-century superhero team tied to Superboy.
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'Supergirl' returns on October 9 on The CW. The series, based on the DC characters created by Jerry Siegel and Joe Shuster, is produced by Berlanti Productions in association with Warner Bros Television.