Cryohedron is an enemy in Final Fantasy XIII. It always starts battle with half of its maximum HP. It deals Ice-elemental damage with its Self-destruct attack, which can easily KO a character in one hit. It is the Ice-elemental counterpart to the Bomb and the Circuitron.
Cryohedrons are very dangerous when fought in groups of three of more, as its Ice attack also heals itself and nearby Cryohedrons, allowing them to use Self-destruct with full HP. Inflicting Fog beforehand will disable all of Cryohedron's attacks, allowing the player to defeat them quickly and safely. To do this, a paradigm featuring Fang as a Saboteur is recommended.
With a good group, the fight against the six Cryohedron, in the area An Asylum from Light, becomes very easy and valuable. They yield 7,140 CP and with the Growth Egg they give 14,280. This makes the fight a good place for endgame-grinding. It is even better than the common Behemoth King/Megistotherian-fight. A group consisting of Cerberus COM/COM/COM with Blitz is the best way to dispatch them. The fight should take only five to ten seconds (depending on the position of the enemies). After the fight go back until they respawn and defeat them again. They also drop Bomb Cores and Ashes, which can be used to level up weapons and accessories.
Cryohedron is a combination of the words cryo, Greek for "icy cold," and "polyhedron."
It is known as Avalanche in the Japanese version. avalanche is a rapid flow of snow down a sloping surface. Avalanches are typically triggered in a starting zone from a mechanical failure in the snowpack when the forces on the snow exceed its strength but sometimes only with gradually widening.An