2. Season 4
Not everyone was a fan of when Supergirl attempted to tackle real-world issues, but the truth is that the show did a damn good job most of the times it did. A real example of that is its fourth season, which highlighted issues of discrimination and racism within society through its alien refugees and how they were treated by both the society and the system around them.
This was a fight that Supergirl couldn’t win with her super-powers and the show did an incredible job of highlighting that. At the heart of it was Agent Liberty (Sam Witwer) who turned out to be one of the show’s most well-crafted villains, using fear-mongering tactics to scare his followers into spreading hate, as he led a troubling movement against aliens on the streets and attempted to repeal the Alien Amnesty Act in office.
The series also shone in other areas as well, with J’onn’s identity crisis providing the character with arguably his best storyline, the formation of the Super Friends setting the tone for the rest of the show’s team-ups and the introduction of Jon Cryer’s Lex Luthor gifting us with one of the best ever portrayals of the iconic villain.
Accompanied by a compelling narrative and some thought-provoking writing, Supergirl season 4 proved that comic book TV can tackle relevant issues and it pulled it off remarkably well.