In the "Pikmin" games, which of the following pikmin colors lacks it's own "Onion" nest?

The answer is Purple because in the Pikmin games, Purple Pikmin lack their own onion nest. Instead, Purple Pikmin are obtained by throwing Pikmin into certain flowers or objects, transforming them into Purple Pikmin. These transformed Pikmin then join the player's squad and are stored within the main onion nests of other Pikmin types, rather than having a dedicated onion nest of their own like the other colors.