In the game, he steals the Shabuhm Shabuhm idol, without which the Muddrake island it belongs to will explode, destroying the isle and it's native inhabitants known as the Muddrakes, and Maui Mallard (Donald Duck) was hired to find it.
After several misadventures, Maui tracks down the Mojo Witch Doctor to the his towering darkened jungle lair, the Mojo Stronghold. Inside lies 4 flying stone platforms with non-magic 3 small green orbs and 4 large magic purple orbs attached to them. And the main platform in the middle has the Mojo Witch Doctor's very own ghastly dark-red throne that has 7 duck skulls with fangs including 5 on the vesica (vesica_piscis)-shaped headstead covered in jungle vines and 2 on the arms.
Maui Mallard in his super-powered ninja garb as Cold Shadow confronts the Mojo Witch Doctor in his Mojo Stronghold, defeats him and recovers the Shabuhm Shabuhm idol.