Legacy is a major selling point of the recently revived Justice Society of America, which is one way it stands out from the Justice League. In comics continuity, the concept of a new generation of heroes joining DC's Golden Age team started with an adult Dick Grayson/Robin in the pages of Justice League of America #55 (by Gardner Fox, Mike Sekowsky and Sid Greene) in 1967. By the late 1970s, three more young heroes joined the aging superhero team: Sylvester Pemberton/Star-Spangled Kid, Karen Starr/Power Girl and Helena Wayne/Huntress.
The mainstream success of those four characters facilitated the formation of Infinity Inc. in the mid-1980s and inspired the creation of Courtney Whitmore/Stargirl in the late 1990s. The CW's Stargirl TV show stays true to the Justice Society's tradition of younger heroes stepping up to continue the good fight. In fact, many of the original Infinity Inc. characters (known as "Infinitors") make up the main cast. Thus it makes sense that certain JSA members would make strong mentors for Courtney and her team; they have the experience of following in the footsteps of the older heroes and having to work through their own issues as both individuals and teammates.
The Huntress Can Help Wildcat and Shiv Resolve Their Differences
One of the original Infinitors in Stargirl is Yolanda Montez/Wildcat. In the show, Yolanda is one of Courtney's classmates at Blue Valley High School and prior to Season 1, she was one of the popular girls at the school who dated Henry King Jr. But after the latter requested a nude photo from Yolanda, her rival Cindy Burman/Shiv, got a hold of the picture and sent it around the school. Not only did this hurt Yolanda and make her an outcast, but Cindy's harmful action earned her a rightful place on Yolanda's black list.
With Stargirl Season 3 focusing on "frenemies" as a theme, Cindy wants to atone for her harmful actions by joining Courtney's Justice Society, and Yolanda happens to be a member. Yolanda has every right not to give Cindy any second chances, so it's on Cindy to repair their relationship. Unfortunately, Cindy still lacks the empathy to understand Yolanda's feelings and make appropriate amends. This is one area Huntress -- a second generation JSAer -- can assist both women with.
As the daughter of Bruce Wayne/Batman and Selina Kyle/Catwoman, Huntress is all too familiar with the idea of a hero forgiving a villain for their actions. While Catwoman never hurt Batman directly, her goals as a criminal often conflicted with his goals as a crime fighter. It wasn't until Catwoman meaningfully changed her behavior that Batman was able to marry her. This makes the Huntress a perfect mentor for both Yolanda and Cindy. She can easily empathize with Yolanda's complex feelings toward Cindy and teach the latter how to be more sensitive to Yolanda's needs. On that note, Huntress could help Courtney sort out her feelings for Cameron Mahkent, since he is also the son of a villain.
Power Girl Can Teach Stargirl How To Be a Better Team Leader
As the protagonist of Stargirl, Courtney is naturally positioned to be the leader of the current Justice Society. But she is still young and new to the superhero lifestyle, and is prone to making a lot of rookie mistakes. She lacks the experience to successfully investigate cases on her own, much less lead a team against dangerous enemies like the long-standing Injustice Society of America without supervision. Luckily, she does have a predecessor with similar experiences: Power Girl.
When Power Girl first joined the JSA, she was an impulsive 18-year-old. Despite being the cousin of Superman, Power Girl (aka Kara Zor-L) lived by a different set of values that informed how she dealt with villains. She started out as the type who would punch first and ask questions later. It wasn't until she befriended the Huntress and became the CEO of her own tech company StarrWare that Power Girl learned to fight smarter and eventually was able to lead the Justice Society herself.
Power Girl can easily relate to Courtney and validate her feelings about crimefighting in a way her stepfather Pat Dugan cannot. She can give Courtney a few pointers without being condescending. Since Power Girl is also in the tech business, she could further mentor Beth Chapel/Dr. Mid-Nite -- especially if she loses her sight like in the comics. Power Girl would have the resources to upgrade Beth's goggles and would teach her how to use the new technology.
Robin Can Help Hourman Come to Terms With His Parents' Deaths
While Courtney and her teammates all have traumatic family experiences that they deal with, Rick Tyler/Hourman is the most extreme case. After his parents Wendi and Rex Tyler left him in the care of his maternal uncle Matt Harris, they were murdered. Rick's life was then defined by emotional and physical abuse that left him withdrawn and unable to control his emotions. He became prone to violently lash out at people he hated, and one of these episodes put his uncle in the hospital with severe injuries.
White Pat has become a father figure to Rick the way Sylvester was to Courtney, there is another second generation JSAer who would be a better fit: Dick Grayson, the original Robin. Dick's parents were violently murdered by a crime boss named Tony Zucco and he was left in the care of Bruce Wayne, whom he later learned was Batman. Under Bruce's mentorship, Dick learned how to channel his anger through crimefighting, while learning to develop his own moral compass. An adult Dick later pursued a career in law and politics in the Earth-2 continuity.
Given how similar Rick's circumstances are, Dick could easily apply the same lessons Bruce taught him when he was his sidekick. The only thing Dick would do differently is teach Rick healthier ways of healing from his loss. But he, and his JSA colleagues, could be hugely helpful to Stargirl's heroes during Season 3.
Stargirl: Frenemies airs Wednesdays at 8:00 p.m. on The CW.