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"The Ussal Crabs are strong and loyal. They help us with many things here, from mining to transportation, but mostly racing."
Midak, Mata Nui Online Game

External Image

Ussal Mutant
Ussal comic.PNG
Conservation Status Common
Powers None
Known Locations Widespread
Pronunciation uss-SUL

The Ussal are herbivorous crab-like Rahi that are extremely common and very useful to Matoran.


Ussal were created by the Makuta, who designed the species by blending viruses in vats of Liquid Protodermis. The Ussal were to be among the Rahi that would populate the Matoran Universe.

On Metru Nui, Ussal Crabs were found in the wild near the shores of Ga-Metru. They were used by the Le-Matoran Ussal riders in Le-Metru, where they hauled transport carts around the city and competed in racing tournaments. Tame Ussal were kept in pens scattered across Le-Metru and were put to work chiefly when a bulky or delicate item deemed unfit for Chute travel needed to be transported. Ussal carts were also used on occasion to carry passengers, although the transportation of bulky cargo was their main application and Ussal drivers were often too busy to pick up other Matoran who flagged them down. Ussal were also well-liked by the Onu-Matoran of Metru Nui, who employed the crabs to move heavy objects including Stasis Tubes.

Pewku, a famous Ussal Crab, in a further developed form

On the island of Mata Nui, they were found all over the island, but were primarily used by the Onu-Matoran. Some worked in mining tunnels like the Le-Koro Highway; others worked in the great Ussalry, led by Onepu, or worked in the Great Mine. In addition, some were still used in sports, such as the Great Ussal Race and Kolhii. On this island, some Ussal were kept in stables. There were some wild Ussal, but not many of them were infected by Teridax during his invasion.

After the destruction of the Matoran Universe, many Ussal immigrated to Spherus Magna.

Mutated Ussal

A rare mutated Ussal, many times the size of a normal one, resided in Metru Nui. It posseses inferior sight, and developed greater hearing to hunt. It was kept in the Onu-Metru Archives, and locked in a sub-level as it was resistant to the effects of stasis.

While searching for the Onu-Metru Great Disk, Toa Metru Nuju and Whenua looked within the beast's cell, provoking it. The Ussal attacked the two Toa viciously, though Whenua generated a deafening hum from his Earthshock Drills, using the creature's sensitive hearing against it. The mutant Ussal hurled the two Toa out of its cell, and they locked the door upon it.

Rock Ussal

A Rock Ussal in the Voya Nui Online Game

Rock Ussal are extremely well adapted Ussal crabs that are scattered around Voya Nui and came originally from the Southern Continent. They can be found in the Desert of Sorrows, and are considerably more aggressive than the average Ussal.

Abilities and Traits

Ussal are very common and they come in a wide variety of colors, including purple and black, blue and yellow, or orange and dark gray. Ussals are known to make a chirping sound, and they have an unpleasant odor that makes their dwellings easy to identify from a distance. While they are easily tamed, some wild Ussal will attack Matoran if provoked. Ussal are also amphibious - while they are usually found on land, they can live underwater as well.

Ussal are prized by Matoran for their friendliness, strength, and swiftness.

Ussal are some of few Rahi that grow as they age. Ussal generally start out very small (several inches long) and then grow to a rideable size. They age for a while after this and then develop rapidly into a larger stage and can change color.

Known Ussal

Set Information

The Ussal in the Master Builder Set

Parts and instructions to build an orange Ussal were included with the BIONICLE Master Builder Set released in 2002. Pressing levers on either side of its back caused it to pinch anything lying between its two claws. The larger Ussal Pewku was released in the larger boxed set "Takua and Pewku" in 2003. This Ussal featured a crawling feature when one rolled it across the floor on its non-canon wheels.


  • Ussal were the first species to be seen in the Comics.


A purple Ussal, as seen in the Mata Nui Online Game

See Also

External Links