Chaos Beast

Chaos Beast (混沌獣) is a type of monster that appears in Mass for the Dead.

Background
Chaos Beasts are endemic to the New World, appearing after the Great Tomb of Nazarick transferred from YGGDRASIL during the Catastrophe. They appear from purple fissures that erupt spontaneously throughout the regions and even in Nazarick. These monsters serve as some of the major antagonists in the ruined New World as the three surviving nations: Re-Estize Kingdom, Baharuth Empire, and Slane Theocracy struggle to rebuild.

Types of Chaos Beasts

 * Quadruped Chaos Beast
 * Warrior Chaos Beast
 * Giant Chaos Beast
 * Double Sword Chaos Beast
 * Giant Flying Chaos Beast
 * Mochi Type Beast
 * Kadomatsu Type Beast
 * Dragon Chaos Beast
 * Spear Chaos Beast

Appearance
These creatures resemble creatures made of amethyst colored metal and crystal, which appear as Chaos Stones. In other rare cases, these stones are embedded in the center of their bodies.

Abilities
Chaos Beasts are noted to be more stronger than average monsters, and their appearances greatly vary from one another. A few powerful types are mostly humanoid and wield weapons and other special abilities and seem to hold general sway over the lesser breeds. Chaos Beasts seemingly appear from the Cracks, which are also able to bypass the defenses of the Great Tomb of Nazarick, prompting the NPCs to be always on guard in case of an attack. In addition unlike other monsters, that fight on instinct or reason, Chaos Beasts will prioritize strong targets based on their level of power. On average most Chaos Beasts are above the difficulty rank of 50 based on the Adventurer's difficulty level for monsters.

Based on Nazarick's experiments it's hypothesized that they possess some sort of sense to help them locate possible prey. Instant death spells can affect these creatures, though experiments have shown this to be the case for ordinary Chaos Beasts and not specialized ones.

Upon defeat, a Chaos Beast's body will dissipate, leaving only a Chaos Stone. According to Momonga, these Chaos Stones are very similar to an item drop like a Data Crystal from YGGDRASIL.

Trivia

 * Usually, in the game, their appearances are heralded by cracks or ruptures in an area of space.
 * They seem similar to spawned monsters from YGGDRASIL though they are a type that Momonga has never seen in the game.
 * Due to the Chaos Beasts, the human nations are in a state of perpetual war, thus weapons and armor are in high demand causing ore prices to rise in the cities.