Purple Pikmin are the second type of Pikmin found in Pikmin 2 and are first found in the Emergence Cave. They are specifically required to obtain a number of treasures, two of which are needed to gain access to new areas, making them necessary to complete the game. In the Wistful Wild area, there is a treasure that requires 100 purples. It is the doomsday appuratus. While it is, in fact, possible to clear the debt in the first area, this takes a substantial amount of time to finish, as eventually the only form of income that remains are enemy corpses.
Purple Pikmin share a number of similarities with White Pikmin. Firstly, they can only be obtained via certain Candypop Buds, in this case Violet Candypop Buds, and have pink flowers rather than white. In addition, at the end of each day, they are stored in the ship; and they are not found in Pikmin. (more...)