How is it that the prisoner locked in a mountain with no light, who was not a bender, all of sudden not only discovered that he had the newly acquired ability to bend air, but mastered it in that tiny cell?
Mike and Bryan said in an interview with IGN that Zaheer was a master martial artist before he was a bender. Basically, its like giving Jackie Chan a broom to fight with: he can apply his already vast knowledge of fighting to something new. If you look at his style of airbending, he only used it (with exception to flying) to enhance his jumping or punches or kicks. Tenzin, who is a real master, kicked his ass when they fought and actually fought like an airbender would: by flowing like the wind and using the enemies momentum and power against them.
the brothers both unlocked lava bending and electricity bending in a time of need.
Actually, Mako could already bend lightning. He used it in a power plant in season one and actually got the drop on Amon in the season one finale. Then I believe he used it a few times in season two in different fights. He just hadn't used it in season three up until that fight for an unknown reason.
If you could master any of the bending arts, but can only choose one branch till it's end (as Earth Bending seems to split into metal bending or lava bending.... maybe you can do both, I'm not sure)
Which element do you choose? What is the end ability you hope to achieve? What would you do with it?
I used to want to be a firebender. I'd love to be able to wield as that power in my fingertips and be able to manipulate lightning and maybe even combustion energy. Of course, I would use my powers for "good"...
But ever since the season 3 finale I now want to be an airbender for the sole purpose of being able to fly. Its always been a dream (literally) of mine of being able to fly, unassisted, in the air.