Tartanos (Korean: 타르타노스에) is a sentient weapon that drains the blood of whoever it injures and receives the memories of that victim. As such, Tartanos can learn the fighting techniques of the person it drains the blood of, as Sakray stated in Volume 10. In some publications of the manhwa, this weapon is known as Talatsu or Talefing. On iRO, this weapon is localized as Thanatos.