Arsenal / Speedy (Roy Harper) to Red Arrow. Both are presented as jerkasses whose only redeeming traits are that they are fighting on the side of good. They both also have an obsessive and selfish personality that serve as their fatal flaws. However, Arsenal represents what Red Arrow could've become had he not have friends or a daughter (the latter which was the real reason he got himself together) and didn't curb his extremely negative traits. Also, while Arsenal still remains a jerk, who becomes even more so (though he does eventually get the hang of his behavior and become nicer after he is ripped into for his mean actions), Red Arrow ultimately proves to be a Jerk with a Heart of Gold who became nicer.
Halo (Violet Harper) to Cyborg (Victor Stone): They're both humans fused with New Gods tech to revive them. However, the Father Box deliberately built itself into Victor and suppressed his humanity in classic Jekyll & Hyde style, while Mother Box binding to Gabrielle was an accident and after Gabrielle was dead, leaving the Mother Box as the sole personality.
Forager to Geo-Force. Both are exiles who can't return to their home, and both are Unskilled, but Strong who can deal heavy damage but are set back by inexperience. However, Forager is calm and polite, never gets angry, acts easy-going almost to a fault, has completely moved on since his banishment and finding a new "hive", and is portrayed as a Nice Guy every day. Geo-Force has a Hair-Trigger Temper and is prone to constant outbursts, comes to blows with others a lot, has an obsession with his past, and is portrayed as a Jerk with a Heart of Gold on his best days. In regard to their banishments, Forager's banishment is temporary thanks to his banisher and former master Mantis siding with Darkseid and not being able to actively enforce his exile, allowing him to freely return to New Genesis whenever he wants to, though he chooses to stick around Earth. On the other hand, Geo-Force had to return to his home by force, overthrowing his way into Markovia. Amazingly, they're the closest of friends.
Forager to fellow alien superhero Miss Martian, specifically her portrayal in the first season. Forager is an exiled refugee, whereas Miss Martian willingly migrated to Earth; and he doesn't even bother trying to conform to human cultural standards (in fact he seems completely oblivious to their existence), whereas Miss Martian desperately wanted to fit in. Even in his Fred Bugg disguise, it's more of a means to get around more easily, rather than an attempt to hide his true self out of any sense of shame.
Cyborg to Blue Beetle — Both are human teenagers who unwillingly bonded to sentient alien devices that give them special abilities and try to turn them evil. Jaime is able to revert between his armored form and civilian form at will, while Vic has the issue of a permanent cyborg appearance as a result of injury. Unlike Jaime with the scarab, Vic was able to resist the control of the Fatherbox. Also Jaime is ecstatic about being a hero while Vic wants a normal life.
Robin III/Tim Drake to Robin I/Dick Grayson now known as Nightwing — Both are Badass Normal, have a knack for leadership, same Animal Motif and Animal-Themed Superbeing, protege under Batman, and determined to accomplish a mission. However, Dick was more playful and confident (to the point of arrogance), Tim is more serious and humble (to the point of Heroic Self-Deprecation).
Ma'alefa'ak (M'comm M'orzz) to his sister M'gann, both having had turned to extremist positions and an "Ends justify the means" mentality. But while M'gann had grown out of her ruthless tendencies by the end of Season 2 and reformed herself, M'comm still openly embraces less than scrupulous actions to forward his goals. And as ruthless as M'gann was in Season 2, she never stooped to killing or using innocents as M'comm has, and that's not taking into account his alliance with the ultimate evil of Darkseid. This comes forth in their argument where M'gann tries to appeal to M'comm's compassion and empathy.
M'gann's relationship with M'comm serves as one to Artemis's relationship with Jade.
M'gann and Jade were both older siblings who sought to escape an unhappy home (Jade being subjected to abuse from her father, M'gann subjected to racial persecution from her other siblings and neighbors) and ended up leaving their weaker younger siblings behind. M'gann had a home with her uncle J'onn and became the superhero Miss Martian. Jade became the assassin Cheshire and joined the League of Shadows.
M'comm and Artemis were both left behind by their older siblings, whom they relied on for protection. Artemis's living situation improved once her dad was largely out of the picture, and she became Green Arrow's new protégé. M'comm, on the other hand, only had his situation worsen until he renounced his family and became a racial supremacist terrorist with the intent of wiping out non-A'ashenn Martians (including most of his siblings and his own mother), and actively alligned with the schemes of Apokolips (effectively becoming the very thing he claimed to want to stop).
The ominously proclaimed "Child" is creepy in the exact opposite way Klarion is. While the latter only plays at being a child, being remarkable in appearance and sadistically petulant, the former goes the other direction of appearing very innocuous, being unceasingly polite and having no emotion towards the atrocities she commits other than the curiosity that inspires them.
