Boo Mario has actually simple abilities; it can float instead of jumping and can make itself invisible to go through certain walls. Entering any lighted space could turn Mario back to normal.
- Boo Mario cannot be attacked by real Boos as well. As shown in its debut, Boo Mario attracts many Boos, as the Boos were in love.
- Due to gay or female-only species references, male Boos will act as buddies and give you tips in other games.
- Waluigi has a form of this in Goomsday Wii.