Kichu are cyborg-like creatures in that their shell is made of metal, yet their insides are made of flesh and bone. Every time one is born, they must be put into a metal shell, or they will not grow correctly. As they grow, the metal shell is shed and smaller Kichu fit into it. Kichu have a very distinct ability to chew on grass, and slowly turn it to metal. This requires a lot of grass. They simply spit the metal out, and other Kichu mold it. Kichu can move at very high speeds, and whilst doing so, make a humming sound. For this reason, people refer to them as "bee" mobs.