A spiked, dome-shaped fortress found southeast of Kasumigaseki across a broken bridge in the world of Blasted Tokyo. It is named after Pluto who resides there. Its halls are filled with Pluto Soldiers and demons who are on the orders of the Gods to annihilate mankind. The entrance was guarded by a Cyber Horde of Pluto Soldiers. The dungeon is made of hallways that lead to circular rooms, and the place appears organic in nature, with lights shining from the ground. Yellow spots found in certain rooms take one up to the next floor, but jumping down through holes is required to get down to the bottom floor as the spots only go up.