The idea of making Korra face a new enemy in each book was one that I admittedly didnt like at first. Amon was so cool and Unalaq so
ehhh
that I would have much rather seen 4 books of fighting equalists. But, seeing the end result, Ill admit it turned out far better than I feared it might. And with the progression of villains, we also got a clean illustration of Korras growth as the Avatar.
Lets look at each of the four main villains:
Amon was practically embodiment of Korras shortcomings as an Avatar. Going into the conflict, Korra was headstrong, naïve, and frankly a little arrogant about her role as the Avatar. But Amon was calm, cool, charismatic, and had powers that even Korra couldnt match. Korras growth here was about widening her perspective; she had to learn that not everybody had the same viewpoints as her, she wasnt unstoppable, and that there is more than one way to attack a problem.
While Korra was outmatched against Amon, when she faced Vaatu and Unalaq, her powers were on par with theirs, thanks to her connection with Raava. And in this case, Unalaq is not a distant boogeyman figure who haunts her nightmares, but a mentor figure. He is still her superior, but in a much more humanizing role. Korras growth here was about moving past being a student and becoming a leader.
When she first faces Zaheer, she has already helped lead the new Air Nation, and taken on some mentor roles of her own, with Daw and Opal. And for the first time, she is physically stronger than the foe she faces, and the Red Lotus must use sneak attacks and deceit to win their fights. Not only that, but she has philosophical conversations with Zaheer as an equal. Her growth here is about understanding her role in the larger balance of the world, and realizing her duty to the world: that she needed to sacrifice herself.
Then, when she takes on Kuvira, she is for the first time the spiritual superior to her enemy. The comparison of Kuvira to book one Korra are obvious. There is a really good shot in the finale where Korra and Kuvira are entering the spirit world, and there are two Korras, one in blue and one in purple, and the purple one turns into Kuvira. Maybe you recognized this shot from book two, where the same thing happened, but that time the blue one turned into Aang. The roles have flipped, and now it is Korras time to be the mentor.
Its neat to see that progression, and Im sure Im not the first to see it. But theres still four more villains to talk about, because each book had two: one big bad (plus henchmen), and one smaller villain that fights against the big bad (ineffectually) and represents the extreme opposite philosophy and illustrates the need for balance (who would have guessed that was a running theme in this show?)
In book one, that was obviously Tarrlok. He serves as a mirror of book one Korra, showing Korra how she might easily turn into the bad guy if she takes the fight too far.
Book two gives us Varrick, who thinks only of himself and his business and is basically the least spiritual person on the show, the complete opposite of Unalaq. His role in book two was unfortunately wasted, because ultimately he did absolutely nothing to affect the civil war or Unalaqs plans and mostly just kept the rest of Team Avatar busy while Korra did all the important stuff. But, hey, at least he tried, which is all the credit I can give for anything in book two.
Book three has the Earth Queen, who apparently has a name, but Im pretty sure they never said on the show. A horrible tyrant who extorts her starving people and ultimately deserved what she got. I liked how we got to see a scene of bandits attacking under both the queens oppression and Zaheers anarchy, illustrating how similar the two states are.
So, who was the side-villain for book four? I had to think for a while on this. At first it seemed obvious that it was Dark Korra, as that was the one Korra spent the most time fighting, but when I thought about it, she didnt match the pattern. Dark Korra never fought Kuvira in any fashion; if anything, she helped Kuvira win that first fight. So who opposed Kuvira in a manner that took things to the extreme and lost? When I asked that question, it suddenly became obvious.
Suyin Beifong was the second villain of book four.
Mic dropped.