This section of the Website is all about different theories about the plot of the Pikmin series. Remember this is all speculation. There are countless theories but I am only talking about three.
Despite Louie being Olimar's coworker and friend, it is a common theory that he is actually evil. This is supported by the fact that the ship believes Louie was controlling the final boss of Pikmin 2, the Titan Dweevil. Additional evidence includes Louie stealing all the Koppiate Juice in Pikmin 3, and his various crimes in Pikmin 4. Overall, this theory is the most believeable of the 3.
This is a very simple one. at the end ofHey! Pikmin, The narrarator states "Olimar snaps out of his daydream and heads back to hocotate" this might imply that Olimar never crashed in the first place, and he was just daydreaming, explaining all the strange things thate happen in the game.
This is probably the most well known Pikmin theory. It centers around the Umibozu, a Japanese mythical creature, which is known to cause shipwrecks of captains. The theory states that the Umibozu is the Goolix, who transformed into the Waterwraith, and then finally the Plasm Wraith. This could explain the many crashes on PNF-404, and further evidence is that in Japanese, the Waterwraith is called "Amebozu"