The third season of DC’S “Stargirl” premieres on Wednesday, August 31 at 8 p.m. ET. Joel McHale has been upped to a series regular this season. He plays Sylvester Pemberton/the original Starman.

There was a lot of curiosity when the news broke that Joel McHale would play a role on Yellowjackets season three. Joel McHale, of course, is an icon in the world of pop culture for his role on ...