Where is the hoarder at in Wizard 101?

The Hoarder is located in the Spiral's first world, Marleybone, specifically in the area called "The Old Warehouse". You can find it in the area where you first meet the Marleybone wizards at the beginning of the game.

The Hoarder is a mini-boss who gives you a quest to retrieve his lost treasure. He appears to be a grumpy, hoarding wizard who has lost a valuable item and needs your help to retrieve it.