I've said it before I'll say it again. Louie as the over-arching final Pikmin antagonist is the funniest thing they've done.
People unfamiliar with Pikmin might think "oh Louie is the series antagonist of Pikmin, like Bowser or Ganondorf" but he's NOT.
Louie is "what if at the very end of a Mario game it was implied that Luigi was responsible for the entire conflict" and then the franchise dug their heels in more and more while intentionally refusing to ever explain what pulled Luigi to the dark side.
Louie is literally just your secondary playable character in Pikmin 2. He's just A Guy for 95% of it. Literally there's nothing complex to him, nothing beyond being your own playable character because the Pikmin 2 game play mechanics need you to be able to swap between two characters. Olimar and Louie are literally name-plays on Mario and Luigi.
...And then you beat the main story. And Olimar accidentally leaves Louie behind on the planet. And then when you come back to save him, you find him riding atop the culminating series antagonist creature, which is essentially a colossal spider with 5 kinds of automatic rifles, which brutally slaughters your pikmin over the course of a long and difficult and drawn-out fight.
And it's kind of implied that Louie was aware of this during the whole fight and he just. Didn't care to change anything about what was happening? You don't even get to talk to him about it. He literally becomes an entry in your treasure horde. The entry says he wants to be addressed as the "King of Bugs". All the notes from him are about how to cook and eat the creatures you've found. Then the final unlockable bonus content informs you that Louie caused the entire Pikmin 2 conflict by eating roughly $10 million worth of golden carrots he was supposed to be transporting, and then lied about it.
And when he shows up in the Pikmin 4 post-game (which is really more like the second half of the total game) he exclusively causes problems. Only causes problems. For exactly no explained reason and he himself seems to not possess any answer for why he's doing it beside a love of bastardry and a refusal to act on anything other than impulse.
Like, Olimar is the antagonist for the first half, but it's because he's been altered into an undead state and once you save him properly, he regains all his senses and he explains absolutely everything. Louie himself is completely within his right mind the entire game and when you try desperately to ask him why he's doing this he just goes "um..." and then ignores you. That part isn't exaggeration. That's his dialogue that's what he does.
And after you chase him on his spree of bastardry and unexplained hostage-taking, it leads you down the final cave where he's at the bottom...riding atop the culminating series antagonist creature
AGAIN.
Do they give you a reason?
NO.
He's unfathomably powerful. He makes it through the cave with 0 pikmin while you chase on his heels getting your own pikmin slaughtered left and right. He's tamed the final beast just ???? because he wanted a roommate? Why is he doing any of this? No one knows. Not even him.
He's a Luigi expy. He's the most powerful bastard in the game. Every speck of journal entry from him--which you tear through searching for any explanation of his behavior--is, exclusively, about how to eat every creature in the game.
