Ensemble Dark Horse / Supergirl (2015)

• When he finally made an appearance in Season 2, the show's take on Superman was quickly embraced by the fandom because, Fandom Rivalry with the DC Extended Universe aside he's an affectionate throwback to the classic Christopher Reeve incarnation without being subservient to it, making him The Paragon yet still a flawed character. Tyler Hoechlin's portrayal of both the Superman and Clark Kent personas is also distinct without being either too derivative or too distant, so one can easily buy into them being considered separate individuals. Many fans and even media outlets are demanding that he get his own spinoff show, DCEU embargo be damned... and in 2019, it was eventually confirmed that a spinoff would indeed be happening. (The series, Superman & Lois, started on The CW in February 2021.)
• Roulette, due to her being a cunning human villainess played by the likes of Dichen Lachman.
• Eve Tessmacher, due to her being a reference to the old Supes movies and her being utterly Adorkable.
• Susan Vasquez, one of the background DEO agents, is also very popular, and is included in a lot of fanfics. Many fans were saddened by her lack of appearances in much of Season 2. Vasquez returns in in episode 11 of season 2, with more screen time.
• Jess, Lena's secretary, is really well-liked by fans and is included in a significant number of fanfics considering she's only had one scene.
• Thomas Coville was very well received for being a complex and sympathetic villain with a uniquely fascinating relationship with Kara, and the fans were delighted when he became a recurring character who got an increased role after joining up with Reign.
• Pam from the DEO's HR department has a lot of fans and has been included in a number of fanfics even though she hasn't even had an onscreen appearance. Fans are fond of speculating about her day and how much paperwork she has to prepare due to the DEO's (especially Alex's) antics. She finally makes an appearance in Season 3, heading after Winn with murder in her eyes after everyone has their darkest id unleashed.
• Despite his makeup and wig, Brainiac 5 quickly gained a lot of attention when he made his debut in season 3 thanks to Jesse Rath's performance, enthusiasm for the role, and his character's endearing dynamic with Kara, leading to many calls for him to stay longer than he was supposed to (which he ended up doing).
• Nia Nal got a ton of attention even before Season 4 started thanks to being played by real life hero of the transgender community Nicole Maines.^note She won a lawsuit allowing her to use the bathroom of her true gender identity at her high school, establishing a legal precedent that will be a huge factor in all future cases of the issue. Once the show started, her expertly duplicating the original Adorkable Kara performance while also being her own independent character got even more people on board.
• Agent Liberty has quickly become one of the show's most popular villains for being a convincingly disturbing and charismatic anti-alien cult leader with a great look. The fact that he actually raises some good points about the role of metahumans in society has been lauded by many as an example of the show's infamous "the aliens are Mexican immigrants" plotline done right. Being played by nerd-favorite voice actor Sam Witwer certainly hasn't hurt his popularity any either.
• Lex Luthor as played by Jon Cryer. Cryer saw this as his greatest second chance to make up for his part in The Quest For Peace^note Cryer played Canon Foreigner Lenny Luthor, a character that wasn't liked by fans. and provided an earnest performance to showcase why Lex is Superman's arch enemy. He eventually became a Breakout Villain and stuck around after Crisis.