Odin is the supreme god of the Norse pantheon in Record of Ragnarok, a Chief God who ranks among the oldest and most powerful deities in the divine hierarchy. He is depicted as a tall, imposing figure with long white hair, a thick beard, and one eye hidden behind an eyepatch, a visual reference to the myth of sacrificing an eye for wisdom. He typically wears a dark cloak and carries two ravens, Huginn and Muninn, on his shoulders, who serve as his companions and often speak on his behalf given his extreme silence.

His true background carries a major twist. The Odin who appears throughout the story is not the original god of that name. The original Odin was a primordial god who helped create the world and served as the leader of Yggdrasil, the four most powerful primordial gods. He was sealed away after attempting to destroy the other gods. Before his sealing, he placed his runes within the cursed blade Gram. Much later, a nameless lesser god discovered the blade, proved compatible with the runes, and inherited the original Odin's power and wisdom. Taking on the name Odin, he rose to dominate the Norse lands and eventually became the supreme god shown in the series. That nameless god was once called Verk, a survivor of the Gornil people whose deeds were erased from history by the surviving primordial gods. After wandering the world trying to share the truth and being believed by no one, and seeing his homeland and people wiped from memory, he grew to despise the world as it was and came to wish for its destruction.

In personality, Odin is quiet, observant, and calculating. He rarely engages in conversation, preferring to watch, judge, and issue short, decisive commands. His mere presence creates an overwhelming tension, and even other gods instinctively fear him. His aura is so intense that it can cause plants and flowers around him to wither. He appears detached from conventional ideas of good and evil, acting with an almost cosmic perspective that sets him apart from the more vocal and passionate gods.

His central motivation is to bring about the end of the existing world by reviving the primordial gods. He refers to Ragnarok as his long-held wish, not simply because he wants humanity destroyed, but because the tournament serves his larger scheme. To resurrect the primordial gods, he needs the four treasures of calamity, the life energy of humanity, and a primordial vessel, represented by the imprisoned hero Siegfried. Much of his behind-the-scenes maneuvering is geared toward securing these elements, which places him at the center of the story as a final antagonist whose ambitions go far beyond the fate of humanity alone.

In the story, Odin is enrolled as one of the thirteen representatives of the gods in Ragnarok. For much of the early tournament, he remains a silent onlooker, letting figures like Zeus and Thor take the spotlight. As the narrative progresses, his hidden agenda is revealed, and he steps forward as the gods' representative in the decisive twelfth round against Sakata Kintoki. Because humanity holds a lead in the match count at that point, the battle carries enormous weight, and Odin enters it as the gods' last line of defense against defeat.

His key relationships reflect his role as a looming force over the entire tournament. He is the father of Thor, and he encouraged his son to crush his opponent in the opening round. Brunhilde, the Valkyrie leading humanity's side, is his primary ideological opponent, and she prepares Sakata Kintoki specifically as the trump card meant to counter him. Kintoki carries the bloodline of Gornil, linking him directly to the erased history that drives Odin's despair. Odin also has connections to figures like Loki, Siegfried, and Nostradamus within the larger scheme.

The character undergoes significant development over the course of the series. He begins as an enigmatic figure who is easy to underestimate because of his silence, but he is gradually revealed to be the architect of the story's central conflict. His appearance in the arena draws extreme reverence, and he displays a battle form described as making gods instinctively understand that he is supreme, sacred, and inviolable. When he prepares to fight seriously, his appearance shifts from that of an aged elder to a more youthful form, signaling his true power.

His notable abilities include an overwhelming presence that suppresses life around him, the cursed spear Gungnir, and a repertoire of curse songs. The myth that Gungnir is a spear that never misses its target is actually the result of these curse songs, which steer the weapon's trajectory and make evasion nearly impossible. He also carries the four treasures associated with his plan, and through the inherited runes of the original Odin, he wields a level of divine power and knowledge that places him among the most dangerous beings in the series.