And who the hell thought it would be a good idea to have a giant blue Korra and a giant black Unalaq care bear stare each other to death? Seriously, that whole giant fight scenario was one of the stupidest things I've ever seen in the Avatar franchise.
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I thought it was a bit far-fetched as well, but it was alright. Plus the sound of the beam coming from Vaatu was badass. Like projectile Inception.