Humanoid beings powered by Ice CHI and created by Sparragus Webb. As their name suggests, they are completely empty when it comes to emotional expressions, unable to feel pain, and cannot taste nor feel pleasure. Some are usually seen hitting their heads on a wall, licking their vomit, standing and talking to themselves yet cannot speak words except Azoth, sit idly and fiddle with their fingers or twitching their heads like a glitch, rubbing their bloating bellies, or just admiring "art pieces", mimicking critics. Despite being powered by Ice CHI, they do not like the cold, let alone stand it, shivering non-stop. Thus, Sparragus gave them clothing despite them being failures. Hollows are very docile and do not attack, even if they are attacked themselves. In fact, they'll even use their abilities to give Spilynda and her companions a hand, since they follow only the greater lineage. Hollows have the mind of a toddler, only broken, and can be given a warmth feeling by the protagonists should their problems be solved with the right solution and will offer the group a reward of rare parts that can upgrade weapons.