Wither

Wither is a hazard taking the form of a gas that weakens Pikmin, the effects worsening the longer they are exposed to it, and may even kill them. Affected Pikmin appear more feeble, slouched with dangling stems, and with less saturation, worse attack power and movement speed, and a greater chance of tripping and falling. Prolonged exposure doubles the effects, even rendering affected Pikmin vulnerable to the hazard they were once immune to and all other hazards instantly lethal to them. Withered Pikmin gradually recover from their condition as time passes, but Pikmin that drink nectar will recover instantly.

=In fanon games=

In Pikmin 2... Again?
The Wither is one of the hazards appearing in Pikmin 2... Again?. It is a sea-brown gas of "unknown" origin, notable for its detrimental effects on Pikmin, though leaders are unaffected. Wither temporarily weakens Pikmin, hence its name, and its effects include being slower, less damaging, and tripping more often, and in its worst stages, renders those Pikmin susceptible to even the elemental hazard they are normally resistant to and instantly killed by all others. Withered Pikmin gradually recover from their condition, with worse stages taking longer to recover from, but nectar consumption will instantly return them to normal. Wither has several sources, which include the Wither Progg, Gloom Dweevil and the Gloomstool, and the Sourberry and the frown grenade. Dark Pikmin are immune to the effects of wither.