you have to get every star, green star, prankster comet and comet medal
She is in Super Mario Galaxy 2. At the end of Grandmaster Galaxy-World S;there is Rosalina.
Birdo is not unlockable in Super Mario Galaxy.
You cannot unlock Yoshi in Super Mario Galaxy; he is not in the game. Yoshi will, however, be unlockable in the upcoming sequel, Super Mario Galaxy 2.
Giga bowser is not unlockable in Super Mario Galaxy. That character does not even exist in Super Mario Galaxy.
Wario isn't in the super Mario galaxy series
First, you must defeat Bowser to unlock the Special World. Second: You must collect all yellow Stars. Third: You must collect all green Stars. Fourth: You must defeat all Comet Missions. After all of these requirements are met, the Grandmaster Galaxy will open.
You can't get the red star in super mario galaxy 2
Super Luigi Galaxy isn't a real game but in both Super Mario Galaxy and Super Mario Galaxy 2 you can unlock Luigi and play him.
yes there is you might need help from a friend and walkthroughs/cheats.
after you get the star 'The Perfect Run' in Grandmaster galaxy rosalina joins your ship.
Yes, Luigi is playable in Super Mario Galaxy. You unlock him after getting all 120 stars as Mario.
the only character that you could unlock by playing super Mario galaxy 1 is rosalina because she was only in super Mario galaxy 1 and now 2