| Character | Real Name | First Appearance | Notes | Portrayed by
|
| Starman | Sylvester Pemberton | Stargirl S01E01 | A former member of the Justice Society. He apparently died from injuries sustained by Icicle during the battle with the Injustice Society. He later appears alive in season two, he was searching for Pat. He found Pat in Blue Valley. He later learned that Pat's stepdaughter was chosen by the cosmic staff. After helping her destroy Eclipso, he offered to help Courtney learn more about the staff's abilities. It was then revealed that his brain was switched with Ultra-Humanite's brain. 10 years after the defeat of Icicle and Ultra-Humanite, it was mentioned by Shade that Sylvester's brain was found and was placed back into his real body. | Joel McHale |
| Hourman | Rex Tyler | Stargirl S01E01 | A former member of the Justice Society. Hourman survived the battle with the Injustice Society after being defeated by Wizard and was eventually able to track them to Blue Valley, Nebraska. However, he and his wife died shortly afterwards in a car accident caused by Injustice Society member Solomon Grundy, leaving their son Rick in the care of his brother-in-law and all of his research on the Injustice Society to Pat. With his research, the new JSA defeated the ISA and avenged him and his wife. | Lou Ferrigno Jr. |
| Wildcat | Ted Grant | Stargirl S01E01 | A former member of the Justice Society. He was apparently killed during the battle with the Injustice Society when he was thrown out of a window by an unknown opponent. His uniform was on display at JSA headquarters, but is currently worn by his successor, Yolanda Montez. | Brian Stapf |
| Doctor Mid-Nite | Charles McNider | Stargirl S01E01 | A former member of the Justice Society. During the battle with the Injustice Society, Doctor Mid-Nite was dragged off into another room by a shadowy hand emitted by Shade. His high-tech goggles contained an AI using his own personality engrams, but the AI was seemingly destroyed by the Icicle. His owl Hooty continues to live in JSA headquarters. In season two it was revealed that he survived the battle, with the Shade trapping him in the Shadowlands. Years later he was released, and helped his successor and the new JSA defeat Eclipso. In flashbacks, Eclipso killed McNider's ten year old daughter, Rebecca. After Eclipso's defeat, he went to reunite with his wife, and learned that he has a ten year old son. He gave the mantle of Doctor Mid-Nite to Beth Chapel. | Henry Thomas, Alex Collins |
| Flash | Jay Garrick | Stargirl S02E09 | During the battle against the Injustice Society, he was apparently killed by Icicle as his helmet is found on the ground with some ice on it. He is later shown in a photograph of the Justice Society. He later appears in a flashback of season two, where the Flash and the rest of the JSA fought Eclipso. Jay later turned up alive 10 years after the defeat of Icicle and Ultra-Humanite. | John Wesley Shipp |
| Johnny Thunder | John Thunder | Stargirl S02E03 | While nothing appears to remain of him, Johnny was apparently killed during the battle with the Injustice Society with Pat Dugan later mentioning that the culprit was Brainwave. He is later shown in a photograph of the Justice Society. A pink pen containing the Thunderbolt, a magical being only Johnny could control, was on display in JSA headquarters. | Ethan Embry |
| Thunderbolt | Yz | Stargirl S02E03 | The Thunderbolt is a magical genie that grants the owner of the pink pen, unlimited wishes. The pen was display in the JSA headquarters. His last holder was Johnny Thunder, before he died, his last wish was that the Thunderbolt finds a new friend. His temporarily holder was Mike Dugan, Mike's best friend Jakeem Thunder is currently the thunderbolt's holder. | Jim Gaffigan
Seth Green |
| Green Lantern | Alan Scott | Stargirl S01E01 | Scott was a member of the JSA, with a powerful ring. Alan Scott was apparently killed during the battle against the Injustice Society by an unknown opponent, with the green flame from his lantern setting the battlefield ablaze. He is later shown in a photograph of the Justice Society and his lantern was on display in the team's headquarters. In season two, it was revealed that Scott had two children, named Jennie-Lynn Hayden and Todd Rice. Jennie has Scott's power ring. | |
| Doctor Fate | Kent Nelson | Stargirl S01E01 | Doctor Fate was a member of the JSA. Doctor Fate was apparently killed during the battle with the Injustice Society by an unknown opponent where his body is seen on the ground just as Starman was about to fight Brainwave. His helmet was on display at JSA headquarters. He is later shown in a photograph of the Justice Society and his helmet on display in their headquarters. | |
| Hawkman | Carter Hall | Stargirl S01E01 | Hawkman was a member of the JSA along with his wife, Hawkgirl. While nothing appears to remain of him, Hawkman was apparently killed by an unknown opponent during the battle against the Injustice Society with Pat Dugan later mentioning that the culprit was Brainwave. He is later shown in a photograph of the Justice Society. | |
| Hawkgirl | Shiera Hall | Stargirl S01E01 | Hawkgirl was a member of the JSA along with her husband, Hawkman. While nothing appears to remain of her, Hawkgirl was apparently killed during the Injustice Society's attack with Pat Dugan later mentioning that the culprit was Brainwave. She is later shown in a photograph of the Justice Society. | |
| The Sandman | Wesley Dodds | Stargirl S01E01 | Wesley was a member of the JSA. With power to interpret dreams and a gun that shoots sleeping gas. In this show, Sandy Hawkins is Wesley's nephew. Wesley was found frozen on the ground during the battle with the Injustice Society indicating that he was apparently killed by Icicle. He is later shown in a photograph of the Justice Society. | |
| Spectre | Jim Corrigan | | Wildcat mentioned that the Spectre was amongst the strongest members of the JSA, who were fighting Eclipso, like the others, he failed to stop him. Until the remaining members stop Eclipso by killing the host, Bruce Gordon. Status: Unknown. | |
| Stargirl | Courtney Whitmore | Stargirl S01E01 | Courtney is the stepdaughter of Pat Dugan and the supposed daughter of Starman. She finds the Cosmic Staff in the basement of her home and activates it, later becoming Stargirl. Becoming the team's leader. Courtney thought she was the daughter of Starman, but she was wrong when her real father showed up. Courtney was heartbroken, after finding out the truth about her father. She didn't want to believe that her father was jerk, but she's come to believe that he is. That didn't stop Courtney from being Stargirl, she thrived and defeated the ISA. In season two, she went summer school for failing her class, due to her obsession with being a hero. It took her a while, but she realized that being having a life is just as important as being a hero. Near the end of season two, she defeated Eclipso, with the help of Starman. Starman offered to show her what the staff can do, she accepted of course. | Brec Bassinger |
| Wildcat | Yolanda Montez | Stargirl S01E01 | Yolanda was a former popular girl and class president candidate until she became an outcast to the school and a disgrace to her parents due to a Sexting scandal that was publicized school-wide. She later meets Courtney. While at first antagonistic towards her, Yolanda later becomes her friend after receiving Wildcat's costume, seeing it as a way to reinvent herself as her mother still claims that she disgraced herself and the Montez family. During the final fight with the ISA, she killed Brainwave as revenge for killing his son, Henry. In season two she started to regret killing Brainwave, and she's been having hallucinations about him. It drove her mad, she blamed Courtney and quit the team. Weeks later, she rejoined the team to take Eclipso down once and for all. After that she rejoined the team permanently and reconciled with Courtney. 10 years later, Stargirl took up the name of "Starwoman". | Yvette Monreal |
| Doctor Mid-Nite | Beth Chapel | Stargirl S01E01 | The daughter of two doctors, Beth is friendly, but lonely. She immediately befriends Courtney upon meeting her and later visits Courtney's home for dinner where she discovers the goggles of Charles McNider. Beth befriends the AI in the goggles and is later given Doctor Mid-Nite's costume and the mantle. She's the team's hacker. During the final fight with the ISA, Icicle destroyed the goggles, Beth was heartbroken about it. In season two she fixed the goggle, but couldn't fix the AI. Instead what she thought was hearing the AI, but it actually Dr. Charles McNider. Beth discovered that McNider is alive, but trapped in the Shadowlands by the Shade. After McNider was freed from the Shadowlands and the defeat of Eclipso, he gave his permission to Beth to be Doctor Mid-Nite. Beth's parents find out about her superhero career, and they support in a very excitable way. 10 years later, Shade mentioned that Beth married Rick. | Anjelika Washington |
| Hourman | Rick Tyler | Stargirl S01E01 | Rick is the son of Rex Tyler. After Rex and his wife are killed in a car accident, Rick is left in the care of his abusive and drunkard uncle Matt. Rick receives Rex's hourglass after Courtney follows him to where the accident took place, and later a party, after it reacts to his presence while helping Pat fix his car. While at first not willing to join the team as he believed that his parents' death to truly be an accident, Doctor Mid-Nite's goggles show a simulation of his parents getting killed by Solomon Grundy as Rick joins to avenge his parents death and get revenge on Solomon Grundy. He is later given Hourman's costume. He was going to kill Grundy, but he let him go. In season two, he befriended the zombie, Rick was determined to keep him safe. One day, Eclipso was messing with his mind, making him believe that Grundy killed a little girl, but she was an illusion. Later that day, he thought he was fighting Grundy, but it was actually his uncle Matt. When he realized he put his uncle in critical condition, he shattered the hourglass in frustration. He was arrested after words, during his time their, Grundy gave him apples through his cell's window. Pat managed to "convince" his uncle to drop the charges and got him bailed out. Rick tried to fix the hourglass, but he couldn't. So he got Grundy to help him fight Eclipso, but Eclipso killed Grundy. After the fight, he buried Grundy in the woods next to an apple tree. 10 years later, Shade mentioned that Rick married Beth. | Cameron Gellman |
| S.T.R.I.P.E. | Pat Dugan | Stargirl S01E01 | Pat is the former sidekick of Starman and the only known surviving ally and friend to the Justice Society. After becoming Courtney's stepfather and moving his stepfamily to Blue Valley, Pat learns the Injustice Society is in Blue Valley and activates S.T.R.I.P.E., a robotic exoskeleton he made out of car parts in order to help Courtney in defeating the ISA. While at first opposed to Courtney recruiting her classmates and forming a team, after their battle with Gambler, Tigress, and Sportsmaster, Pat approves of the team and begins training them to take down the Injustice Society. | Luke Wilson |
| S.T.R.I.P.E. | Mike Dugan | Stargirl S01E01 | Mike is the son of Pat, stepson of Barbara, and stepbrother of Courtney. He was unaware of his dad's past as a superhero, until the near season finale. In season two he joined the JSA as a trainee, learning how to operate the S.T.R.I.P.E. armor. 10 years after the defeat of Icicle and Ultra-Humanite, Mike joined the JSA under the alias of S.T.R.I.P.E. 2.0. | Trae Romano |
| Jade | Jennie-Lynn Hayden | Stargirl S02E01 | Jennie is the daughter of Alan Scott, the Green Lantern. After Scott's death, his ring was placed into Jennie's hands to keep it safe. Years later the ring was activated, leading her to the Lantern that was used to charge the ring. Then she was learning how to control her powers, by controlling her emotions, when she got angry the Lantern exploded, she was able to absorb the energy and she became the battery herself. She helped the JSA defeat Eclipso, after that, she left Blue Valley in search for her twin brother, Todd Rice. 10 years after the defeat of Icicle and Ultra-Humanite, she was mentioned by Shade to have joined the JSA under the alias of Jade. | Ysa Penarejo |
| Jakeem Thunder | Jakeem Williams | Stargirl S02E03 | Jakeem is Mike's friend. One night, while in his room playing video games, the Thunderbolt appeared right in front of him. Jakeem and the Thunderbolt became good friends, he's been making wishes that mostly involve food. Mike found him and recruited him into the JSA. With his and the Thunderbolt's help, they defeated Eclipso for good by turning him into toast. 10 years after the defeat of Icicle and Ultra-Humanite, he was mentioned by Shade to have joined the JSA under the alias of Jakeem Thunder. | Alkoya Brunson |