It just dawned on me how many people from Glee have been working on Supergirl. Melissa Benoist obviously has the lead role. Peter Facinelli, Blake Jenner, and Grant Gustin all have recurring roles. Glee writer Ali Adler is the co-creator of Supergirl, with Roberto Aguirre-Sacasa also writing some episodes. In many ways, I feel like Supergirl is Glee part 2!