First you must aquire the Stone ability by inhaling a Rocky or by using a copy statue in Milky Way Wishes.
Then you have to keep pressing the B button until a gold statue comes up.
It could be: Samus from the Metroid series, A golden HAL block (HAL... more
Start by playing Revenge Of The King. Play level 2 (Illusion Islands) until you get to the cave part. Then get the stone ability. Keep it and keep going until you find a stake switch in the ground. Hammer it with the stone ability, then walk in to the... more
Play Spring Breeze level 4. In King DeDeDe's arena go to the far left or the far right and you will see Mario and his friends. You can also do this by playing Megaton punch and Mario and Luigi will be watching.