Adora's character arc deconstructs The Chosen One. The first few seasons set up Adora/She-Ra as a heroic warrior who fights for the liberation of Etheria. Seasons 3 and 4 reveal that Adora's ancestors, the First Ones, weaponized Etheria as a tool for genocidal conquest, repurposing the She-Ra mantle for the purpose of war. The holder of the She-Ra mantle was intended to be a tool, and the personhood of She-Ra was never given consideration. Part of Adora's character development is deciding that she will not be a tool of destruction.
She also deconstructs The Atoner. Especially in Season 5 after Horde Prime invades Etheria and she loses the ability to transform for a while, Adora starts reaching Martyr Without a Cause levels, pushing herself to exhaustion and acting like a Leeroy Jenkins because she's that desperate to make up for what she perceives as her mistakes. Catra calls her out on this in "Failsafe", asking Adora whatshe really wants, and Adora has trouble answering.
Glimmer deconstructs the Military Maverick. Throughout season one through three, she regularily ignores her mother's orders in order to act on her own plans, feeling that her offensive strategy is better than Angela's defensive. This generally works out for the best, since Angela is overly cautious. But then Angela sacrificed herself, leaving Glimmer as the queen of Bright Moon. Glimmer never grew out of feeling that she knew better than whoever was in charge... but now she's in charge, and she can steamroll any objections. This goes seriously wrong when she becomes stubbornly blind to the legitimate faults in her plans, and her reaction to the objections of even her best friends is to simply pull rank on them.
The Horde
Catra deconstructs The Starscream. She proves adept at seizing opportunities to further her position and power, but as she gains influence within the Horde, her character flaws (reckless, selfish, desirous of glory) manifest through poor tactical decisions, a lack of loyalty from her subordinates, and ambitious plans that are easily foiled. Further, those same character flaws are the very flaws Shadow Weaver saw in her and why Catra never got recognition or promotion in the first place. Season 5 continues this, as Horde Prime is wise to Catra's past betrayals and outright rejects her as a willing aide when she starts to suck up to him. Her hanging around powerful villains in an attempt to usurp them gets her mind controlled and nearly killed.
The first two seasons set up Hordak as a typical Evil Overlord. As the leader of the Horde, Hordak must cultivate a ruthless, stoic, and unapproachable exterior and desperately hide his physical illness and emotional vulnerabilities. Living among ruthless minions who are constantly jockeying for power results in Hordak being lied to, manipulated, and separated from his first, and perhaps only, friend. It's implied that what he really longs for is not power, but self-worth and love. His conquest of Etheria is rooted in a tragic Freudian Excuse.
Season 4 moves Scorpia from a straight example of a Token Good Teammate to a deconstruction. In earlier seasons, she's a sweet, kind, slightly ditzy person who prides herself on her loyalty, but happens to work for a colonialist military dictatorship. Then comes the episode "Princess Scorpia". Over the course of the episode, she takes the time to process some of the terrible things she's been complicit in and the awful people she serves, decides that being the good person she wants to be and remaining with the Horde are not compatible, and leaves to save Entrapta.
Likewise, Double Trouble is a deconstruction of the Token Evil Teammate. Even in an imperial dictatorship like the Horde, they only care about their own self-preservation, making money, and having fun doing evil, but they have absolutely no loyalty to anyone and aren't even going to bother to pretend otherwise. Thus, Double Trouble will turn on their teammates when they decide doing so is to their advantage, has no problem sitting out a conflict if they decide they don't care to help either side, and is, at the end of the day, a Wild Card who will do what they want, when they want, without caring about the consequences as long as they aren't directly at risk.
Lonnie, Kyle, and Rogelio are a deconstruction of the concept of Mooks. The only difference between them and the legions of faceless Horde soldiers the cast spends much of the series fighting is that these three have names and recurring roles. And it turns out that being soldiers in an evil army sucks, because their superiors boss them around and have no concern for their safety or well-being, and they're expected to just follow orders and not ask questions. Little wonder the three eventually desert when they've had enough of this treatment.
The Galactic Horde
Horde Prime deconstructs the Invincible Villain. Having conquered galaxy after galaxy, Horde Prime equates perfection with success; by achieving absolute victory, there’s nothing left to achieve, so he sees little incentive to improve himself in any way and he ends up underestimating those he's seemingly crushed under his heel. Also, because he has known nothing but victory for eons, he's incredibly arrogant and complacent and he cannot fathom the possibility that he can actually lose. When Bow inspired others to rise against him and Hordak stands up to him, making his first taste of true failure imminent, Prime completely loses his mind and ultimately attempts to destroy all of reality in a fit of rage, all because his fragile ego simply cannot handle the prospect of defeat.
