Recently? Kyoshi. Specifically teenage Kyoshi in the novels.
I don't know if you've watched the animated Avatar series, but there are episodes that gives us a calm, distant, nearly mythic Kyoshi, which makes sense when she lived for something like over two centuries. But the books rewind that clock, and... wow. The teenage Kyoshi is a walking, unstable fault line.
So, she had a brutal childhood. Not just neglected, but we're talking about her being abandoned by her parents in a village that wanted nothing, and I mean zero contact with her. And when she was finally taken in by someone, she's functionally indentured. treated like a servant at best, a contaminant at worst. Yeah, there was a handful of people who treated her fairly, but it was only two who were genuinely her friends.
Everyone else might as well have crossed the street to avoid her.
So, at age seventeen, when she witnesses someone she's emotionally latched onto getting hurt, then witnessing an escalation where she genuinely believes she's watching her friends die, she snaps. We're talking full white-noise, tunnel-vision, berserker obliteration.
That first real crash-out? You know what friendly-fire is, right? Well, she rips the seabed out of the ocean and annihilates the area she is occupying, a zone that has both those who took her in and a pirate fleet battling each other, but the ones she loved too. Except, she believes these pirates murdered them. And I don't mean that metaphorical, kid-friendly sort the cartoon was only permitted to show. She saw one get trapped in a ball of ice and I think that ball shot spikes inwards, then the other I believe had been struck so hard in the head, Kyoshi thought her friend died before falling to the ground.
Response? This girl literally creates a new landmass in the middle of the sea.
And, yeah, I'm calling this giant a girl here. She's seventeen. Another thing is that she doesn't even know she's the Avatar yet; one of the friends she witnessed being "murdered" was mistakenly identified and groomed to be the Avatar. So she isn't entering the Avatar State, this is her going full brute force just to free herself, get everybody away, just to reach her friends. Oh, uh, yeah, what I mean by freeing herself is that she's trapped in ice, both pairs of arms and legs encased like she sunk into the frozen, solid mass, but she's tearing herself free through sheer rage and grief. And it is in that moment of not accepting the reality she's seeing (which gladly was later revealed to be inaccurate), she drags the ocean floor upward because accepting any more loss in her life broke her.
It's that really raw, unhinged, and terrifying sort of rollercoaster you'd get from a teenager who isn't at all trying to be edgy, but genuinely on edge. Kyoshi didn’t start as a legend. She started as a disaster and the world kept giving her a reason to rip it in half... which she eventually did somewhere after living for a century.
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