Gadroon Warehouse is an interior instanced mission map accessible from the City Center district of Millennium City. It is the location of the objectives of the mission Take You to Their Leader, given to heroes by Silver Avenger Mayte Sanchez. __ToC__ The alien Gadroon have infiltrated Millennium City, hiding among the populace through the use of holographic technology. The invasion force is being directed from a single location where the Invasion Leader oversees the actions of his followers.