Stone Doohickey

From the Super Mario Wiki

Stone Doohickeys are red statues that guard the boss doors in Wario World. They resemble tall, thin pillars with a crest of The Black Jewel on top. In each level, Wario needs to gather Red Diamonds to give to the Stone Doohickey. Once enough Red Diamonds were handed over, the Stone Doohickey would disappear, and Wario could fight the boss.

Wario World
Wario's Moves	Corkscrew Conk • Dash Attack • Ground Pound • Hyper Suction • Jump • Power Throw • Piledriver • Wario Punch • Wild Swing-Ding
Major Bosses	Dinomighty • Dual Dragon • Red-Brief J • Captain Skull • Black Jewel
Minor Bosses	Greenfist • SandWorm • Brawl Doll • Clown-a-Round • Winter Windster • Spideraticus • Mean Emcee • Ironsider
Worlds	Excitement Central • Spooktastic World • Thrillsville • Sparkle Land
Levels	Greenhorn Forest • Greenhorn Ruins • Horror Manor • Wonky Circus • Shivering Mountains • Beanstalk Way • Mirror Mansion • Pecan Sands
Collectibles	Coin • Garlic • Mr. Wario's Golden Statue • Red Diamond • Spriteling • Wario's Treasures
Objects	Arrow Block • Battle Ring • Bunny Spring • ByeBye Balloon • Column • Drop Block • Escape Spring • Garlic Dispenser • Glue Globe • Marshmallow Block • Rock Block • Sculpture • Smiley Bomb • Swirly Slab • Swirly Spinner • Treasure Button • Wooden Chest
Enemies	Angler Mangler • Ankiron • Big Bone-Fist • Big Scorper • Cage Beast • Clubosaur • Cobra • Cractyl • Crystal Entity • Door Spirit • Electric Clown Fence • Elephant • Fattington • Flying Spade • Freeze Cannon • Icicle Mite • Laser Jigglefish • Magician • Magon • Monstrous Magnet • Ninja Crow • Old Red-Mug • Ram • Silver Door Spirit • Stone-Cold Statue • Stone Doohickey • Swordfish • Terrible Portrait • Tree Freak • Unithorn • Wind Winder • Witch