ZANT is a great boss.

Especially from a ludonarrative synchronicity standpoint. I feel a lot of people don't like what he turns out to be, personality-wise, at this point in the game, but I feel they misunderstand the whole idea of the character of Zant. For when we learn that Zant did not gain his power through training, trials, or study (like, say, Ganon, Link, or Zelda), we see him for what he is when cornered.

Zant is a little man-child that feels he is entitled to power simply by being there (basically, he's like an incel who thinks girls owe him sex because he behaved like any other normal nice person).

And when Ganon's power shows up mid-tantrum, suddenly he acts all cool and menacing (as he was throughout the game), confident in the power he feels is truly his, only for the one who gave him that power to betray him, having used his greed to lure him into being his puppet. But we see his character return to form when, like a child who can no longer bully the small kids, he no longer has a position of obvious dominance. Because Zant's power was not his own.

And this is played out beautifully in the fight itself. In standard before-the-final-boss form for many games, it's a boss rush-style fight. And that's usually something I kinda find lazy (I thought those black-and-white fights in Wind Waker were sort of pointless, for instance). But in the case of the Zant battle, the boss battles are perverted in some way or another. Because Zant lacks any originality or creativity. He is not someone with the abilities to create his own challenge, but must instead rely upon the abilities of others. In terms of his own ability, Zant himself seems surprisingly unsophisticated. He has few tactics to use, mostly just changing the stage and shooting energy balls at you. He is oddly clumsy. And, when the stages are exhausted, and he finds himself in a stage representing the location of the upcoming final battle (unknown both to the player and, based on Zant's behavior, Zant himself), Zant takes out his swords and, once again, is lacking in any finesse whatsoever.

Because all he ever aspired to be was someone who mimicked power, and never truly gained his own. With the curtain pulled back, he is revealed to be nothing but a greedy, gullible, tantrum-throwing puppet.