Thanatos' role and attribute remains relatively the same from the original game. Ryoji Mochizuki's true form as Death looks identical to Thanatos, seeing that Thanatos can be the manifestation of Ryoji's friendship with the protagonist during his form as Pharos. Thanatos also grants the equipment Ring of Darkness, which repels Darkness-based attacks, as his Heart Item. Thanatos' fusion prerequisite requires all the other Personas of the Death Arcana, namely Loa, Pale Rider, Samael, Mot and Alice to perform a pentagon-spread fusion in the Velvet Room. Later, the protagonist can gain access to Thanatos after the Social Link with Pharos is completed. Thanatos emerges from Orpheus' head, ripping Orpheus apart and mercilessly slicing apart the Arcana Magician looming ahead. It first appears near the beginning of the game, when the protagonist first attempts to summon Orpheus.
Thanatos is the ultimate Persona of the Death Arcana in Persona 3. Like other demons sealed in the Womb of Grief, freeing Thanatos will unlock him for fusion. Thanatos can be found in the central area of the Ingress in the Womb of Grief, but due to the layout of the level, he can only be reached after the protagonist as explored a vast majority of the Sixth Sphere, while requiring the assistance of several apps along the way, including Floor Search. Profile Shin Megami Tensei: Strange Journey Redux Kaneko's design for Thanatos draws inspiration from two sources: Okuyasu Nijimura's deformed father from Jojo's Bizarre Adventure: Diamond is Unbreakable and Vladimir Harkonnen from the 1984 film Dune.
In the Greek poem, Theogony, Thanatos ( Greek: θάνατος, Death) is one of the sons of Nyx and Erebus and is the elder twin brother of Hypnos. He did not play a major part in Greek mythology and rarely appeared in any stories, as he was mostly displaced by Hades, the god of the underworld. He is commonly known as a harbinger of peaceful death, bringing the eternal sleep of death to the world while more violent gods were responsible for harsher death. Thanatos is the personification and god of death and mortality in Greek mythology.