Mary her superheroname is Mary Marvel. She's 18 and Billy, Freddy, Pedro, Eugene and Darla's foster sister and the "den mother" who helps take care of the other kids at the foster home. Eventually, she and the rest of her foster siblings gained the powers of Shazam, leading to form the Shazam family. She's the smartest in the team. She's prepping for college. And by saying Shazam she can turn into the Superhero Mary Marvel. with superpowers, a cool suit and a more adult body.