Cosmic Clone

Cosmic Clones (or Shadow Clones) are shadowy duplicates of Mario or Luigi that appear in Super Mario Galaxy 2. Cosmic Clones are created once a certain point is reached in a galaxy and will follow behind Mario or Luigi, performing every movement the plumber makes. Once the way out of the area Mario is in is revealed, they will disappear, leaving behind a multiple of 3 Star Bits. If Mario touches a clone, he will take damage, so horizontal movement is necessary for survival. Boards usually warn the plumber that Cosmic Clones are present in the area. Cosmic Clones also are able to walk where there is no platform if it is necessary for following Mario. Also, Cosmic Clones will do whatever Mario did, even if the landscape has recently been changed.

The Cosmic Clones most likely replaced Cosmic Mario as Mario's cosmic entity.

Locations

Galaxy	Mission(s)	Planet(s)	Duration of Chase
Sky Station Galaxy	Storming the Sky Fleet	Flipswitch Planet	Until Mario flips all the Flipswitches.
Spin-Dig Galaxy	Silver Stars Down Deep	Starting Planet	Until Mario shatters the Item Crystal containing the Sling Star.
Fluffy Bluff Galaxy	Search for the Toad Brigade Captain	Pond Planet	Until Mario collects all the Star Chips.
Puzzle Plank Galaxy	Purple Coin Shadow Vault	Three Pillars Planet (Inside)	Until Mario collects all the Purple Coins.
Cloudy Court Galaxy	Silver Stars in the Purple Pond The Shadow Lining	Poison Swamp Planet Starting Planets Castle Wall Planet	Silver Stars in the Purple Pond - When all the Silver Stars are collected. The Shadow Lining - Permanently when Mario shatters the Item Crystal containing the Power Star
Haunty Halls Galaxy	Spooky Cosmic Clone Chase	Disapearing Paths Planet	Until Mario shatters the Item Crystal containing the Power Star.
Chompworks Galaxy	Cosmic Clones in the Chompworks	Rising Platforms Planet	Until Mario guides the Golden Chomp into the hole.
Mario Squared Galaxy	Luigi's Purple Coin Chaos	8-Bit Luigi Planet	Until Mario collects all the Purple Coins.
Flip-Out Galaxy	Cosmic Clone Wall Jumpers	Second Wall Jump Planet	Until Mario shatters the Item Crystal containing the Power Star.