LAS VEGAS – Milly Alcock told the crowd at CinemaCon that she learned five fictional languages in order to play Kara Zor-El, also known as Supergirl.

She called playing Zor-El "incredibly transformative for me, not only personally but professionally."

Alcock also revealed that there was no canine actor for Supergirl's superdog and friend, Krypto. "It's movie magic, guys," she said.

At the convention of movie theater owners and studios on April 14, Warner Bros. previewed film footage that showed Zor El on a ship that gets raided by pirates. The action-packed scene sees Supergirl's powers kick in. "She’s flying toward the sun," an unnamed character exclaims.

Supergirl calls her cousin Superman, who is reprised by David Corenswet, a "nerd" in the footage. "He sees the good in everyone, I see the truth," she adds.