[or: what could drive a man to hate his young son so much that he’d burn off half his tear-stained face and send him away forever?]
so ozai clearly had a lot of reasons to hate zuko, the central, most obvious of which is zuko’s personality. ozai’s son is the exact opposite of everything he values. zuko isn’t calculated or cunning or cruel. he’s so much the opposite that he can’t even pretend to be any of those things. because of this ozai sees zuko as weak.
but this explanation leaves something to be desired, because it only does half the work. it doesn’t explain why zuko’s “weakness” would inspire hatred so strong that ozai would look for years for the opportunity to exorcise his son from his bloodline ; a hatred so strong that he would burn off half the boy’s face and send him away so as to never lay eyes on him again. the personality-clash explanation doesn’t get to the root of ozai’s hatred.
clearly, to understand the cause of their dysfunctional downright disastrous relationship, we should look less at zuko’s psyche and more at ozai’s. i’d argue that it is ozai’s own insecurity, stemming from his own family dynamic, that caused him to despise his son and favor his daughter.
yeah, i know, insecurity seems like a cop-out of an explanation. how many times have we heard the “bullies/stalin/[insert cruel person here] were just insecure” spiel? but hear me out.
set aside, for a sec, the fact that ozai is clearly a power hungry, megalomaniacal tyrant and the fact that zuko, to him, is a subpar heir for his empire. that’s more of a pragmatic (in a really loose sense of the term) explanation for ozai’s hatred. let’s take a minute to forget power politics and just look at the human reasons —the sub-rational, emotional, psyche-driven reasons—why ozai despises his firstborn.
it starts with ozai’s own father. azulon clearly favored his firstborn, iroh. judging by their age difference (iroh is what, fifteen years older than ozai at the least?) my headcanon is that ozai’s conception was an accident. azulon had no need for a second son, surely not when iroh was nearly an adult already and shaping up to be a fine heir. i’m sure iroh outshone ozai at every turn. how could he not, when he was so much older? he was probably off achieving military victory and slaying dragons before ozai had a chance to come close to mastering firebending.
but we do know from the show that ozai is a gifted bender. he has to be. despite not being his father’s favorite, i’m sure ozai saw himself as the superior bender. clearly he thought very little of his brother, even before iroh’s ignominious defeat at ba sing se. ozai saw himself as the one fit to rule. he was the cold one, the calculated one, the cunning one. just look at his lightning, at how quickly and mercilessly and sharply he strikes. iroh, even before he turned against the fire nation’s imperial conquests, had to have been kind at heart—a stark contrast to ozai’s cold ambition that surely ozai percieved as weakness and a sign that iroh was unfit to rule all along. iroh was the seemingly perfect older brother who got praise, attention and the birthright he didn’t deserve, and whom ozai hated and coveted with bitter passion.
from there, then, it’s easy to see how this resentment might translate onto ozai’s own children. his firstborn is very much like iroh. zuko has that same softness in his heart, in contrast with his younger sister’s coldness that she seems to have inherited (or at least been open to learning) from her father. in zuko and azula, ozai saw iroh and himself: the weakling heir and the younger child truly fit to rule. with them, ozai becomes the father he wanted his own to be by rejecting the weak, soft firstborn and training the powerful and worthy secondborn as his heir. with his own children he rights the wrongs his father visited upon him.
ozai’s bitter hatred of iroh, hardened from decades of being looked over for and compared to his favored older brother, finds an outlet in zuko.
and then there’s the issue of ursa.
we know that ozai’s marriage to ursa was meant as a kind of experiment. azulon wanted to try to make his bloodline stronger by mixing it with the avatar’s. surely, for ozai, there was no greater insult than being a guinea pig in his father’s experiment and being given a wife from the bloodline of a reviled enemy of their nation. azulon would never have married ursa off to iroh. ozai’s resentment of taking the avatar’s granddaughter as his wife probably contributed to how horribly he treated her. ursa’s daily presense in ozai’s life stood as proof of his father’s disregard and disfavor.
it’s made pretty obvious in the series that zuko is a momma’s boy. he takes after his mother in personality and clings to her side, and to top it all off, ursa clearly favored zuko as he favored her. ozai’s firstborn became to him an extension of his hated wife, and therefore also a symbol of his father’s disfavor and his unjustly inferior position in the royal family.
so combine that with the fact that zuko was born without the “spark”, his firstborn a non-bender, the humiliation!, and the fact that zuko reminds him of iroh and it becomes pretty obvious why ozai wanted his firstborn gone.
zuko is the embodiment of everything that threatens ozai’s desire for power. he is everything ozai despises:
he is iroh, the weak firstborn poised to steal the crown from the truly worthy heir.
he is ursa, the symbol of his father’s disfavor.
and last but not least, he is a representation of ozai. to have such a shameful creature, who doesn’t even have the spark, representing him to the world? it is unacceptable. ozai has spent his whole life trying to prove that he is the strong one, he is the powerful one, he is the ambitious one, he is the one fit for the throne…
and zuko threatens all of that.
