World of Chaos

The World of Chaos is the final boss from Kingdom Hearts.

The World of Chaos is a giant, biogenetic Heartless battleship that Ansem bonded himself to as his final form. Capturing Donald and Goofy, Sora was forced to fight Ansem on his own until he retracted into his Guardian. But after getting his friends out and destroying the Core, Ansem reawakened to fight the three off before they did enough damage to destroy the World of Chaos and forced Ansem to separate himself from it, leaving him mortally weakened as a result.