3. Season 2
After a lukewarm reception at CBS following its first season, Supergirl moved to The CW network, joining its DC superhero predecessors Arrow and The Flash. This also meant that production of the series would move from Los Angeles to Vancouver to be more cost-effective. Unfortunately, this also meant that cast members would need to relocate, which didn’t sit well with Cat Grant’s Calista Flockhart, who was reduced to a recurring character since she wanted to stay in Los Angeles with her family.
The move between networks also saw the introduction of a ton of new characters, though some looked familiar. Notably, Katie McGrath joined the series as Lena Luthor, Floriana Lima as Maggie Sawyer, and Chris Wood as Mon-El. Former DC superhero Lynda Carter (Wonder Woman) became a recurring character, playing President of the United States Olivia Marsden. Teen Wolf alum Tyler Hoechlin also took on the role of the Arrowverse’s Superman, subsequently getting his series years on the same network later.
McGrath’s charismatic portrayal of Lena quickly turned her into a fan-favorite character, allowing her to turn her three-episode stint into a series regular gig, and launching the infamous Supercorp ship. Lima’s no-nonsense Maggie was a nice addition to the cast as well, particularly when it came to pairing her up with Chyler Leigh’s Alex (Sanvers forever!). Wood’s portrayal of Mon-El received a mixed reception as he was brought on as a love interest for Kara, but fans had a hard time seeing her with such a problematic (ie slave owner) character. Ironically, it’s the casting of Mon-El that would bring Wood and Benoist together, with the two marrying in 2019.
This season of Supergirl was built on the foundation of Kara and Alex’s relationship as sisters. Kara found herself in the middle of her first real relationship with another alien, Alex came to terms with her sexuality –leading to one of Leigh’s most poignant, and well-acted storylines of the entire series. Additionally, the decision to have Kara and Lena be friends was an inspired choice, instead of having them at each other’s throats like Superman and Lex. Although this would lead to a problematic development down the road, the chemistry between Benoist and McGrath was electric from the start.