In "Black Adam," Amer and Shahi are siblings who help release Johnson's antihero from imprisonment. Chaos and wry humor ensue. Shahi, who grew up in Euless and was a Dallas Cowboys cheerleader, holds her own against big-budget effects and Johnson's eyebrows. Amer's Karim is a cab driver with a penchant for always popping in at the right (or wrong) times.