The Yimi were a species of sentient, diminutive humanoids with large skulls that were indigenous to the world of Kathol. They were created by the DarlStryder and contained large brains which were flash-printed with necessary skills. The species was created to be extremely loyal to their creator. Despite their complex brains, they were unable to learn new skills that were not flash-printed. It was believed that the Yimi were crafted by DarkStryder to be twisted versions of the ancient Kathol themselves, as a cruel joke on its own creators.