Chronos (alternatively spelled as Khronos or Chronus) is one of the primordial Deities in the Greek mythology, said to be the personification of time and the lord of the Zodiac. His name means the word "time". He was initially portrayed to possess an incorporeal figure as a serpent with three heads; one of a man, the second of a bull, and the last of a lion.
Cronos (alternatively spelled as Kronos or Cronus) is the Titans lord and harvest deity. Enticed by his mother Gaia, Cronos picks up the sickle and castrates his own father, Uranus, thus becoming the new king of the gods. However, fearing the same fate would befall him, Cronos devours his own offsprings. His consort Rhea secretly gives him the stones wrapped in clothes for sparing the newborn Zeus and Crete. Zeus later leads his surviving siblings to conquer Cronos, repeating the history of overthrow, this war is so-called Titanomachia. When the Greek mythology was absorbed into the Roman pantheon, Cronos is identified as Saturnus.
Chronos, of the Fortune Arcana, is the evolved Persona of Jun Kurosu, obtained by mutating his prior Persona, Hermes, in the Velvet Room after having it equipped during the Aquarius Temple boss battle. His design shows him to have a clock instead of a face, attached on his head and four wings are attached to his back, with two of them sheltering his shoulders toward the front direction. His helmet is also added with wings, similar to Hermes. This evolution allows Jun to block any kind of attacks of the Wind, Light, and Dark elements, but its weakness against Earth may be a concern. Chronos learns powerful wind-based spells and some useful recovery skills, and is also capable of performing one of the most powerful Fusion Spells in the game, Grand Cross.
Chronos appears in a golden metallic form, summoned by Metal Jun of the Metal Trio, encountered by the player in Torifune. His unique spell, "Terror of Fortune", reflects the original Chronos' skill, "Cross Fortune".
Chronos is a god of death and time, born from man's collective unconscious to guide and accompany them to the afterlife. However, his encounter with the young girl Rei lead him to abandon his duties and reside in the world he made for her, separating himself into Zen and the Clockwork God.
Knowing that they had the power to accomplish what needed to be done, the piece of Chronos known as the Clockwork God summoned the P3 Hero and P4 Hero and their companions to the rift where Zen and Rei were residing in order to force them to traverse the labyrinths so Zen could regain his memories and resume his duties.
Chronos is often confused with Cronos because these two names primarily differ in the initial consonant of the spelling, kh and k, even the Japanese Katakana rendition of both names are the same. This confusion is intended by the game developer as shown in Chronos/Cronos's in-game description along with his speech when mutated from Hermes. Nevertheless Kaneko's artwork features wings and elements of the mechanical clock, referencing the Greek father of time. Jun's complex about his father, Akinari Kashihara, can be related to Cronos and his relations with his father, Uranus.
Also, Jun's Zodiac sign is Aquarius. It is ruled by the planets Saturn and Uranus. The name of the planet Saturn comes from the Roman god Saturnus who is identified as Cronos.
In the fan translation of Innocent Sin, he is referred to as Kronos. Both interpretations of his name are acceptable because the appearance and background of the Persona show mythological traits of both deities.