Mold

Mold is a new hazard type appearing in Pikmin: Other Frontier. It takes the form of a moss green powder-like substance and affects all Pikmin except Cleaner Pikmin.

Mold is comparable and contrasting to Poison, like Poison they can take the form of Vents that the Pikmin are immune to then can destroy (although Mold comes out of black vents while Poison comes out of tan vents). Unlike Poison which mainly suffocates Pikmin, Mold makes Pikmin hostile and converts them into Moldmin.

Trivia

 * Some enemies that use Mold to attack look like they are in control of the Mold as well while others appear that the Mold controls them.