5 Things You Need to Know About "Supergirl" Season 21 of 6
When Supergirl moves to her new home on the CW, she’ll be joined for the first time by her famed Kryptonian cousin Superman. Andrew Kreisberg and Greg Berlanti told IMDb about their plans for Season 2, including a role for the actress who embodied TV’s first iconic superheroine and the first-ever crossover storyline between all four of DCU-set series.