Disclaimer: I don't own the Legend of Korra or the show's characters.
He was born in ice
Raised to hate
His heart grew cold, an icy barrier that shrouded his soul.
A journey begun, he walked into the shadows
Stabbed by the poison of hatred, lured by whispers of revenge
He faced the world behind a mask
The eloquent destroyer who sung of retribution for ills
He spun a dream of equality
And, in his blinding fervor, became a monster
A product of his world