Unidentified flying objects (or UFO's for short) are flying devices that are sometimes used by the Rabbids.
In Rayman Raving Rabbids, they are usually in the first person shooting games, where the rabbids fly in them,it takes a few hits to destroy them,They sometimes charge up a Raving Robot with their electricity. A UFO itself is a boss in the game, where it has a shield and can't be destroyed with plungers, but rather the player must deflect rockets at it.
The UFO's return in the second game with the same purpose but with a different design, however in this game they also send out rabbids out of them, after the last boss is defeated, a green UFO falls on the Chef Bunny.
They apear briefly in SOS red planet at the title sreen of the minigame where a rabbid is holding a toy UFO on a stick.
At the begining of the game a rabbid is cotroling a UFO with the nintendo wii u gamepad and uses it to invade the anusement park.
In this game the UFO's appear all around space,and in some missions the player must make the rabbids hit them.
In The Rabbid Who Fell To Earth, Cody investigates a location where a UFO sighting is seen and takes the rabbid that is dressed up as an chicken (thinking he is an alien) at the end a real UFO is seen picking up a real alien.