Bomb Boo

From the Super Mario Wiki

A Bomb Boo is an explosive, black-colored variety of Boo. They are enemies found solely in the game Super Mario Galaxy. Bomb Boos have so far only made appearances in the Ghostly Galaxy, during the missions Beware of Bouldergeist and Bouldergeist Daredevil Run. Bomb Boos float lazily back and forth, exploding after some time, but they move towards Mario or Luigi. But if the player Star Spins near one, instead of it escaping, Mario or Luigi will grab its tounge, and it would get span around until it hits something or until Mario or Luigi's grasp weakens.

Boo Characters
Bigger Boo | Boolossus | Boos in Luigi's Mansion | Bootler | Franky | Herbert | Igor | King Boo | Lady Bow | Lahla | Peeka | Spooky Speedster | Stanley | The Creepy Steeple Boo
Boos
Atomic Boo | Balloon Boo | Big Boo | Big & Little Boo | Blindfold Boo | Bomb Boo | Boo | Boo Balloon | Boo Buddy (SMW) | Boo Buddy (YS) | Boo Buddy Block | Boo Buddy Snake | Boo Guy | Boo Man Bluff | Broozer | Calm Fishin' Boo | Circling Boo Buddies | Dark Boo | Dark Dark Boo | Disappearing Boo Buddies | Fishin' Boo | Li'l Boo | Mad Big Boo | Mad Boo | Red Boo | Sleepy Boo | Stretch | Terekuribo