Shadow Bouldergeist

Shadow Bouldergeist is Bouldergeist possessed by the Shadow Queen and is the main boss of the first mansion. He acts just like the original Bouldergiest, using the same attacks showing no change, but after taking 3 hits, Bouldergeist shows that it has learned new moves, being able to pick up very large boulders and tossing them at incredible speeds. after it is defeated, Luigi obtains the Key to the next mansion and unlocks the 300 Boos and receives the Advanced Boo Radar from E. Gadd.

Trivia

 * Shadow Bouldergeist, along with the Shadow Queen, is a spirit that is not sucked up by the Poultergust 6000.


 * Just like in Super Mario Galaxy and it's sequel, Shadow Bouldergeist is accompanied by Bomb Boos.