Geoff Johns Casts Nickelodeon Star Brec Bassinger As the DC Universe’s ‘Stargirl’Geoff Johns Casts Nickelodeon Star Brec Bassinger As the DC Universe’s ‘Stargirl’Geoff Johns’ ‘Stargirl’ series has finally found its lead in the new DC Universe streaming service drama.E. Oliver WhitneyE. Oliver Whitney