Snacktus

The Snacktus is an enemy encountered in Pikmin: The After Years. It resembles a cactus in appearance and shape, and when approached, the beast will reveal its smiling face. It will crush Pikmin and eat them when they get close. The Snacktus cannot be hurt because it is covered in spines, so Pikmin that come in contact with it will be instantly impailed and die. Snackti, however, are stationary and will remain in the ground. The Snacktus is invincible and a bomb-rock will only stun it.

In Pikmin 3: The Dweevil's Revenge
The Snacktus appears in Pikmin 3: The Dweevil's Revenge in the area Dweevil Desert. Unlike in Pikmin: The After Years, it does not crush nor eat Pikmin. It can only be harmed by leaders or bomb-rock explosions and its spoils lose the spikes to allow for safe carrying.