This page contains Super Mario Galaxy Unlockables for Nintendo Wii called "Hidden Character" and has been posted or updated on Nov 6, 2007 by dolly4359. Let us know what you think of this Unlockable by thumbs voting.
Get all 120 stars. Return to Rosalina on the Comet Observatory and request to fight Bowser again. Finish the credits and you will get a message saying that Luigi is now playable.
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