Graptors are medium-sized predatory beasts native to the vast prairies and forests of planet Koje. Graptors are pack hunters and evolved from a land octopus-like ancestor. Two of its tentacles gained bone-like (but fully organic) structures and evolved into long, still flexible cursorial legs; two others became clawed grasping arms, and a fifth one originated a long, scorpion-like bladed tail. The remaining three tentacles degenerated into multiple tongues and other mouth-parts. The Graptor only has bones in its legs, but the arms, tail and body are kept in shape thanks to the torpor generated by a tough sponge-like tissue that encloses its inner organs.