Frown grenade

The frown grenade is a obstacle that falls from above, withering any Pikmin in its range. They appear as translucent sea brown orbs that burst upon hitting the ground, releasing the gas trapped within.

=In fanon games=

In Pikmin 2... Again?
The Frown grenade is an obstacle in Pikmin 2... Again? that falls from cave ceilings and breaks upon impact with the ground, releasing a lingering cloud of withering gas. They are transparent, plastic-looking orbs that are filled with wither gas and also have a cartoony yellow frowning face on them. Surprisingly, the frown grenade also doubles as a treasure, the Frown Grenade, in the Crumbling Dungeon, as one lands on a part with a mattress, cushioning its fall well enough that it doesn't burst open and can be delivered to the Research Pod for Pokos.