Ah yes, the E3 2007 trailer, I think Boo Mario will let you fly, float through walls, and act as a disguise to pass normal boo's. And seeing that there is a spotlight in the transformation to boo mode, it looks like it gets rid of the costume
Kimi wa ne tashika ni ano toki watashi no soba ni ita
Itsudatte itsudatte itsudatte
Sugu yoko de waratteita
Nakushitemo torimodosu kimi wo
I will never leave you







