Piranha Plant Void Glitch
The Piranha Plant Void Glitch is a freeze glitch variant found in version 2.0.0, 2.0.1, and 2.0.2 of Super Smash Bros. Ultimate. The glitch requires using Piranha Plant, Ganondorf, a Deku Nut, and a Super Mushroom. To perform this glitch, Piranha Plant must use the Super Mushroom transformation, then have a third player (preferably Villager or Isabelle, as a fighter with a Pocket would make the glitch much easier to perform) throw a Deku Nut at it. Once the Giant Piranha Plant is stunned, have Ganondorf use Dark Dive on it. While grabbing the Plant, the third player must throw a second Deku nut at them to perform the void glitch. This glitch results in Piranha Plant getting stuck in the grab animation while Ganondorf gets stuck in the tumble animation. The only way to escape this glitch without restarting the fight is to have the third player hit them.
This glitch was patched in version 3.0.0.