World of Chaos

World of Chaos is a massive flying Heartless warship that can be found exclusively as a boss in the Kingdom Hearts series.

Kingdom Hearts
After Donald and Goofy are captured, Sora is forced to fight the now gigantic Ansem on his own, until Ansem is forced to retract himself into the ship. After Sora releases his friends and destroys the ship's Core, Ansem is exposed and forced to fight the three heroes together.

Eventually, the heroes destroy the World of Chaos, and when Ansem calls upon Kingdom Hearts to aid him, he is obliterated by the light that sleeps within it. Riku's body is returned to him at this point, but unbeknown to him, it still contains the surviving traces of Ansem's heart.

Design
The World of Chaos is a titanic battleship and easily one of the largest Heartless seen in the Kingdom Hearts series, and is on par with the Groundshaker in sheer magnitude. It seems to be almost entirely organic and made of twisted, discolored flesh. It is colored in a sickening mixture of primarily pink that fades into cyan, brown, purple, and yellow in various places. Two leg-like protrusions are attached to the battleship's underside. The foremost one, underneath the Heartless's face, is long, thin, and triangular. The rearmost one, underneath the main core, is a wide, thin arc. A long, rocky "tail" sprouts from the World of Chaos's back. Its body is very long and flat on top and has two rows of discolored teeth lining it. Scattered along the World of Chaos's sides are bulbous patches of flesh covered in green-purple growths. Its face is on the front tip of its body, and its main core is located on top of its body towards its rear. The World of Chaos's face is demonic, and sports a long, pointed chin and a bulbous forehead covered with thick veins. Its mouth is filled with large, white fangs and its eyes are fairly small, glowing yellow, and surrounded by black rings. The core is covered by a twisted, dark pink cage.

On top of this cage are Ansem and his Guardian, both now enormous in size — though still small in comparison to the World of Chaos — and even more monstrous in appearance. Ansem has abandoned his original clothes, wearing nothing but a pair of organic-looking black pants/shoes that appear to be made of muscle tissue. His pants have dark yellow lines on them that outline glossier patches on them and a black belt with a long hexagonal "buckle" also outlined with yellow. His eyes have turned completely orange, and he wields a duel-bladed polearm akin to Riku's Soul Eater. The Guardian's head is now more demonic, with red rings around its eyes, its long antenna becoming a protective helm of large, jagged black horns with a similar plating covering its jaw. The skin underneath this armor is blue-black and its mouth is filled with sharp, white fangs with blue gums. On the Guardian's shoulders are two bulbous blue orbs. It has two narrow yellow "eyes" on its chest and two red tubes that wrap around its back, connecting to two red dragon heads underneath its arms. Its arms have loose flaps hanging from them like cloak sleeves. Its torso is opened up, exposing its vertebra and a broken ribcage in which Ansem can rest in. Several thick, black, organic cords extend from the Guardian's open chest cavity that connect into Ansem's back. Its now solid-looking tail is now fused into a twisted pink mass akin to a pilot's seat atop the cage. The Main Core of the World of Chaos is a bulbous, deformed, blue organ covered in violet growths of varying sizes. The most prominent of these growths has a faint silhouette of a skull on it, with the eye sockets, nasal socket, and gaps in the teeth being white. Two smaller growths near the top of this main one are oriented in a way that resembles a Mickey Head symbol. The World of Chaos's various Room Cores are all circular and red with grey edges. They have small yellow spots placed randomly on them and have a thin, blue-green, teardrop-shaped additive floating above its tip and below its bottom.

The smaller of the World of Chaos's two artillery organs are comprised of two jagged, blue tentacles with blue-white tips that clamp together. They are yellow on the inside and grown from purple bumps on the World of Chaos. The larger artillery organs are more ornate, being blue with turquoise additives and smoother edges. They are pink on the inside and grown from large, purple bumps with turquoise patterns on them.

The name of the World of Chaos represents the chaos and destruction brought to the worlds by the Heartless. The former part of its name could also be a reference to the immense size of the Heartless.

Origin
The name of the World of Chaos represents the chaos and destruction brought to the worlds by the Heartless. The former part of its name could also be a reference to the immense size of the Heartless.