By getting every single Star coin
In the DS version you have to get ALL the stars from ALL the levels in ALL the 8 worlds.
he has no last name.
super mario 64
I don't know why, but their last names are Mario. Luigi Mario and Mario Mario. I don't gat it.
It was a mistake. Mario was the main characer. However, like the Jonas Brothers, Mario and Luigi: their last name is Mario, discovered later.
you cant(n)
Get all the star coins.
Mario and Luigi's last name is Mario. Mario Mario and Luigi Mario. This is why they are always referenced as the Super Mario Brothers.
beat the last boss in the last castle in world 2 as mini Mario
You have to have purchased all of the other wallpapers that are available.
Beat bowser, and huge bowser on the last level.
I think NSMB Wii was the last one.