Illusions are a new hazard introduced in Pikmin: Dimensional Breach. They are invisible unless the player has Black Pikmin in their army, upon which they appear as the afflicted objects flickering like a trick of the light.

Function

Illusions take the place of various enemies and obstacles in the world, especially in the Wraith Kingdom and certain Caves. If the player has Black Pikmin in their army, they will be distinct as they flicker like mirages; otherwise, they will be perfectly indistinguishable from their real counterparts. Illusions act much like their original counterparts, but they are invincible, emitting a warped hum sound rather than the "thunk" used for hitting other invincible objects, like Iridescent Flint Beetles. Only Black Pikmin can deal any damage at all to Illusions, this being an instant "kill," with the Illusion vanishing into oblivion. After obtaining the Illusory Annihilator upgrade, the Captains' whistles will also be able to shatter Illusions if focused onto them.

Trivia

Illusions are one of two hazards in Dimensional Breach that require a specific milestone to be reached to be detected, the other being Radiation.