- "Shake the Wiimote to Spin Bomb Boos! When they hit something, they go BOOM!"
- ― Mailtoad, Super Mario Galaxy
Bomb Boos are a type of Boo that appear in the Mario series first appearing in Super Mario Galaxy. They are explosive, charcoal-black colored Boos. This enemy is typically a fusion of a Bob-omb and a Boo, due to its traits of a Bob-omb and its species being a Boo.
Bomb Boos appear in the Ghostly Galaxy in the missions Beware of Bouldergeist and Bouldergeist Daredevil Run. They first appear inside the mansion. During the Bouldergeist battle, Bomb Boos only appear when Bouldergeist throws a small black stone.
They also appear when Bouldergeist loses his rock body and floats lazily around, having Bomb Boos appear from its trail. Mario can use them to deal damage to Bouldergeist. Mario can defeat these Bomb Boos by using his Star Spin to grab the Bomb Boo by the tongue and fling it around until defeated. If held for too long, it explodes on Mario, injuring him.
Super Mario Galaxy 2
Bomb Boos reappear in the Boss Blitz Galaxy once again aiding Bouldergeist in battle. They act the same way as they did in the previous game.
- The Bomb Boos share a similar name to King Boom Boo from the Sonic series.