I previously posted this on twitter but for all the smart people who don't have that hellish app, here's an entirely too long analysis on how Kleya and Dedra are mirrored characters and foils to one another
Both Kleya and Dedra are orphans. They had their families and innocence ripped away from them as children at the hands of the Empire, or, if we want to be more specific taking into consideration Dedra's age, at the ends of a government that rules via violence and repression.
Kleya's family and people are massacred and she is raised by one of the men responsible for said massacre. Dedra's parents are arrested and she is raised in a kinder block, an apparatus that works in tandem with the one that took her family away from her.
Dedra is 3 years old when she is taken away from her parents. At such a tender age, she has no recollection of her prior life, which means she completely interiorizes the Empire's values she's exposed to. Kleya is 11-12, old enough to remember exactly what was taken from her, to know it was an atrocity, and to hate who did it.
Dedra has no sense of self outside of the system that phagocytized her. She becomes the Empire. Its rules and structure are home to her. She finds affirmation in becoming the oppressive force that tears families apart, so she dedicates her life to enforcing that chokehold.
Kleya, too, was shaped by what was done to her, but she becomes the Cause. Her life is in service of freeing the galaxy from the Evil that took everything from her, of making sure no one else will ever have to experience what she did. Most importantly, it's her own choice.
The Empire wants the homogenization of its subjects, and Dedra embodies the Empire, but here is the hypocrisy and brilliance of her character: she is selfish. She is ambitious, ignores orders to seek personal glory. Dedra works in service to the system, cannot imagine anything outside it, but within the system she exists in, she wants to emerge as DEDRA.
Kleya fights for the freedom and individuality of every being in the galaxy but she has stripped herself of any individual hopes/desires. Her own self does not matter to her, to the point that in 211 she doesn't get why Cassian wants to save HER instead of just caring about the intel.
Even the fact that Dedra dates Syril shows this Selfish/Selfless dichotomy. Having a partner is, broadly speaking, a self-indulgent choice. It's an exclusive bond between yourself as an individual and another person, and Dedra gets herself a boyfriend who is like a pet that will do everything she wants. Kleya instead sacrifices everything to the altar of the Cause. She deprives herself of love or friendship or meaningful connections, she doesn't even entertain the possibility of seeking something for herself.
And speaking about that, both Kleya and Dedra are extremely controlled, contained, emotionally guarded characters. The rigidity in their physicality reflects the need they both have to maintain control at all times, because vulnerability scares them.
They both grew up without tenderness or affection. Dedra understands love only through a lens of control and power. Kleya wills herself not to feel love at all.
It's very boring to me when people interpret Dedra and Syril's relationship as "she never cared about him, she only ever manipulated him because she is EVIL". That is so two-dimensional and not at all accurate. Yes, she is evil, she is a fucking monster. But also, from her perspective, Dedra does love Syril. We see it in the way she steps up to Eedy to defend him, when his happiness after the meeting with Partagaz causes her happiness. But that's the beauty and tragedy of it, and why she is such an amazing villain. Her understanding of love is completely warped. To her, love is all about ownership and control. But love is the opposite of ownership. True love is selfless, and it is freeing, and Dedra is terrified of freedom. She is someone who wants to love, but never can. Not really. Because control isn't love.
On the other hand, Kleya is someone who very much does not want to love. She wants to be as cold and unfeeling as she can because that will make her free from any vulnerability and she will better serve the Cause. But underneath that armor, she loves immensely. Kleya wants to be heartless, but love spills out of her.
They both have nervous tics that manifest when the control they desperately need is slipping from them. By definition, a nervous tic is something that can't be controlled. This crack in their armor reveals itself literally through a betrayal by their bodies.
Dedra in particular literally needs the dark to be vulnerable. She needs Syril to turn out the lights to have sex. She lets herself sob in Narkina only after the lights go off. Everything that reminds her that she is human is something to hide, something to be ashamed of.
Both have a mentor in Luthen and Partagaz. Dedra spends years trying to impress Partagaz only for him to make no qualms about casting her aside after the Axis fiasco. Kleya wants to hate Luthen, she refuses to consider him a father, yet she cannot help but love him, and when the time comes, Luthen gives up his life to save her. One is a bond of opportunism, the other is a bond of love.
And this is where it shows why they're such perfect mirrors as villain and hero. Dedra spends her whole life in service of a system that rejects her and spits her out. Kleya is ready to be tossed aside, but is instead offered love and kindness, by people she oftentimes had a hand in hurting. She is reminded that her life matters.
This show is SO intentional when it comes to its transitions. In the final montage of the show, Dedra and Kleya's ends are shown back to back, and I don't think it's a coincidence at all.
Dedra ends up in prison bc of a chain reaction that started with her inability to let go of Axis. She disregarded all protocol in her obsession to catch him. And once she found Luthen, her arrogance led her to face him. She didn't just want to neutralize a threat to the Empire. She NEEDED him to know that SHE beat him. Except, she didn't.
Because Luthen wasn't Axis. Or at the very least, it wasn't just him. Kleya is the Axis Dedra never found, the one she never even knew existed until it was too late. Back in season 1, she tortured Salman Paak and he revealed that a woman had approached him and convinced him to hide the fractal radio in his backyard. That woman was most definitely Kleya. But Dedra, so meticulous with every other bit of information, didn't focus much on it. Her obsession with Axis blinded her. In her hubris, she let the most important piece slip through her fingers. She destroyed her own life for nothing.
Look at their final scenes. Kleya steps into the sunrise, sees the community she doesn't quite feel part of but that she helped create, a community that welcomes her. And she smiles. Dedra, alone and forgotten in the dark, is consumed by misery and despair, in a place that values its prisoners less than droids.
They both essentially started out in a box. Kleya in the metal compartment on Luthen's ship, Dedra in the kinder block. Kleya ends her journey out in the open, surrounded by light and life. Dedra ends her journey back where she started - in a sterile, lifeless box.
Dedra's ultimate personal defeat wasn't the leak of the Death Star information. That's a defeat for the Empire. Dedra's goal was to win against Axis. And she doesn't. She loses. Because Kleya gets to live.
