Just as they do in previous Pikmin games, Onions play a very important role in Pikmin 4. There are two different types of onions in the game: colored onions and Flarlic. Colored onions allow players to grow and harvest new types of Pikmin, with the color of the onion dictating the type of Pikmin that gets unlocked. Flarlic, on the other hand, is used to increase the maximum number of Pikmin that players are able to use at any given time.