Boo Mario

Boo Mario is a new form of Mario's that will appear in the upcoming game Super Mario Galaxy; as it's name implies, the Boo Mario form is Mario, having changed into a Boo, though with his hat and face remaining relatively the same.

In order to change into Boo Mario, Mario was shown to grab a floating, white object that instantly transformed him; the full extent of Boo Mario's powers are currently unknown, though he was shown to be capable of floating.