Supergirl is the superhero television series based on the DC Comics character. The series follows the adventures of Kara Zor-El (Melissa Benoist), who is the cousin of Kal-el, the superhero who comes to be known on Earth as Superman. Originally sent from Krypton to protect her cousin, Kara finds herself landing on Earth several years following Kal-el's arrival and discovering that he has already grown up while she remained the same age when she left. Now living on Earth without a mission, Kara is adopted by a human family and subsequently takes the name of Kara Danvers (in a nod to previous Superman universe adaptations, Kara's father is portrayed by Dean Cain, who portrayed Superman in the series Lois & Clark: The New Adventures of Superman and her mother is portrayed by Helen Slater, who portrayed Supergirl in the 1984 feature film adaptation). In the series, Kara, now in her mid twenties, must learn to embrace her powers after she has to reveal them during an unexpected disaster, setting her on her journey of heroism and self discovery as she begins to take on the persona of Supergirl. The series premiered in the fall of 2015 in the US on CBS and was co-developed by Greg Berlanti, who also developed the other DC Comics superhero series Arrow and The Flash. Grant Gustin's guest appearance as Barry Allen in the Season 1 crossover episode World's Finest led to the series being moved from CBS to the CW Network and its production moved from Los Angeles to Vancouver from the second season onward, thus officially incorporating it into the CW's Arrowverse.
The following lists the seasons of the series Supergirl: