Not unlike other species in the Monster World, Osstax begin as disparate individuals who find each together and join together to make a whole greater than the sum of its parts. This can be a tricky process, though, as it's important for the individual beings to fit together perfectly, both physically and as a kinship group. The bottom Osstak is generally understood to be the leader and most important of the three, although there have been exceptions. The bony enamel of their exteriors.