So, we all agree the Red Lotus was OP, right?
I'm just finally watching this show and I finished Season 3 last night, and during final few episodes I am thinking to myself, "there's no way these 4 (Zaheer, Ghazan, Ming-Hua, & P'Li) could possibly be this difficult to subdue."
For starters, one of the things common to all of them is that they've been imprisoned in a cage for 13 years, and all of them are at least a few years past their physical prime. Uncle Iroh was able to actually firm himself up while imprisoned for a few weeks, but let's be honest: 13 years of imprisonment, closely watched by guards, is not going to improve these people's bending ability. And yet they were caught to begin with, so how good could they even have been in their prime, to say nothing of their rusted busted selves now.
Now, in increasing order of ridiculousness:
Ming-Hua
She's the only who is truly believable. Her lack of arms almost guarantees that she developed a accomodatingly high level of mastery in water bending. Also, the only other water bender she ever faced was an older Kya, who she was clearly better than. Versus Mako and Bolin her water bending just seemed to be able to trump them, and her ice scythes, darts, and grappling ability was truly impressive. Still, without blood bending, being limited to water bending meant she should have been individually no match for either the Avatar, Master Tenzin, or Bei Fong.
Ghazan
What the hell is lava bending? How is that not also fire bending? Anyway, how was he able to totally destroy the Northern Air Temple? Why is his lava self-perpetuating? Why did it just keep increasing in volume long after he ran off? Why didn't it naturally cool? Why couldn't any of the air or water benders just freeze it back into solid Earth? For that matter why couldn't any earth bender just smother it with regular dirt? How could it melt through other earth instead of slowly cooling? His bending was just absurdly powerful, but at the same time easy to neutralize, though no one bothered to do so.
P'Li
She has one attack! There is neither subtlety nor trickery involved in this one attack! Floating above the fray, taking ranged shots from an airship, fine, I can accept that, and tactically it's brilliant. But holding her own against 2 master Earth/Metal benders, plus a handful of metal bending security personnel? Please. Just attack from different vectors and she's done.
Zaheer
For most of this guy's life he wasn't even a bender, of anything at all! All the other new air benders discovered their gifts accidentally while their lives were in peril. How exactly did Aiwei even discover his power? His life would never have been in peril inside his cage. And since he is under constant surveillance how did he conceal this new manifestation when he first became aware of it? Or did he somehow know he had this power before ever demonstrating, unlike every other new bender we saw. How did he learn to use it sufficiently well to escape, again, while under constant surveillance? How is it that Bumi, under the direct tutelage of an Airbending master, is somehow inferior at airbending, by magnitudes, than a guy who has received no training at all? How can Aiwei become almost a master level Airbender within weeks? How can he even defend himself against Master Tenzin, or the Avatar, let alone actually score hits on both? How did he master a flying technique so rare and difficult no one had done it in centuries, and was thought myth?
When Amon's blood bending was revealed, I thought, "ah, now it makes sense. this guy is a legitimate threat."
When Unalaq fused with Vaatu I thought, "damn, shiz just got real."
With the Red Lotus, I just sat there thinking, "come on....."
EDIT: fixed Zaheer's name
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Death is the road to awe.