Marcus Mars

Saint Marcus Mars is one of the Five Elders who head the World Government, holding the title of "Warrior God of the Environment".

Along with the other Elders, he is one of overarching antagonists of the entire One Piece series, being one of the primary antagonists in the Final Saga.

Appearance
Mars is a very tall and thin man with long white hair, including a mustache and goatee which reach down to his upper chest. He wears a navy blue suit over a black tie and a white buttoned shirt, as well as navy blue pants.

Personality
Like the other Elders, Mars cares about the balance in the world maintained by the Three Great Powers and wishes to maintain it. This also includes preserving the image of the World Government by keeping the events of the Void Century a secret, and he and the other Elders will immediately have anyone destroyed who is found to be studying it. During the Ohara Incident, he was courteous to Clover, acknowledging the scholar's achievements and justifying the danger of reviving the ancient weapons. At the time of ordering the killing of scholars, Mars was seriously embarrassed when he gave that order. He appears to view the Nefertari Family's rejection of life on Mary Geoise harshly, as he stated that such an action makes them traitors. He will obey any order given by Imu without question, as he views Imu to be a "creator" who alone has the power to shape the course of the world. Mars has been shown to be extremely callous, as he had no issue with annihilating a highly populated country and justified it because its populace had started to show signs of rebellion.

While other Elders have occasionally struggled with their composure in the wake of massive threats, Mars has always been shown with a calm and stoic demeanor. He seems to keep profiles on people, allowing him to be discerning when discussing them, as he knew that Shanks' personality made his contact with Whitebeard less threatening. He also knew that Blackbeard's past would give him a great advantage in replacing Whitebeard as an Emperor, and wanted to know the connection between Luffy and Rayleigh.

Like the other Elders, he has little tolerance for people of lower rank challenging their authority, as shown during the Elders' meeting with Marine Fleet Admiral Sakazuki.

Abilities and Powers
As a member of the Five Elders, Mars is one of the few to have the "highest authority of the World Government", being above even the World Nobles. He has control over every facet of the World Government, including the police, the Marines, and Cipher Pol, and even the Fleet Admiral of the Marines is incapable of challenging his power. As a result, he has authority to declare a Buster Call, and he and the other Elders can use their great degree of power to manipulate the media and withhold facts from the general public, including erasing entire segments of history, most notably the Void Century. The only known person who seems to outrank the World Nobles is Imu.

Transformation
Mars has an ability that allows him to transform into a giant bird-like creature. In this form, he could withstand a point-blank blast of fire from Sabo without difficulty. It is unknown if this power is related to a Zoan-type Devil Fruit.

Weapons
Mars carries a flintlock, which he intended to use to execute Nefertari Cobra for seeing Imu.

Past
As recognition for his genius inventions in MADS, Dr. Vegapunk was invited to Mary Geoise for an audience with the Five Elders.

Twenty years before the start of the series, Mars was with the other Elders as he spoke to Professor Clover, an archaeologist from Ohara who was revealed to have been studying the Poneglyphs. He warned that the Poneglyphs would result in the return of the Ancient Weapons that would bring crisis to the world, but Clover revealed that he had discovered the truth about a Great Kingdom that was destroyed by the World Government. This caused Mars and the Five Elders to immediately order for Ohara and its scholars to be destroyed with a Buster Call.

Jaya Arc
A Marine came to the Room of Authority to report that Shanks had made contact with Whitebeard. Although the prospect of two of the Four Emperors meeting was dangerous, Mars stated that Shanks did not want to change the world under his own will. The Five Elders then talked about finding a replacement for Crocodile's position in the Seven Warlords of the Sea.

Long Ring Long Land Arc
The Five Elders got a call that Marine Admiral Aokiji had gone off on his own.

Post-Enies Lobby Arc
The Five Elders received a report that Shanks had successfully met with Whitebeard himself, to their shock.

Post-War Arc
The Five Elders talked about the aftermath of the Battle of Marineford, and Mars wondered about Luffy's connection to Silvers Rayleigh. They then talked about Blackbeard's rise to power, with Mars noting that he was very familiar with Whitebeard's former territory.

Dressrosa Arc
Fleet Admiral Sakazuki came to the Room of Authority to question the Five Elders about why they let Donquixote Doflamingo use the World Nobles' authority to misinform the entire world. The Elders reminded Sakazuki of his place and reprimanded his insolence, when a Marine came in and revealed that Luffy and Trafalgar Law's alliance had taken down Doflamingo, and that their victory had been broadcast to the entire world, shocking the Elders and Sakazuki.

Levely Arc
As the Levely was beginning, the Five Elders were approached by Shanks. Because of his position, they reluctantly allowed him to talk to them about a certain pirate, although Mars stated that Shanks was not suitable to get involved with politics. After meeting with Shanks, they headed toward the Empty Throne, and talked about how king Nefertari Cobra of Arabasta had requested to meet with them. Upon reaching the Empty Throne, they knelt before its occupant Imu as they requested that Imu tell them the name of the "light" that needed to be extinguished from history.

Wano Country Arc
Shortly following their meeting with Imu, the Elders granted Cobra the audience he requested at the Empty Throne. Cobra brought up his ancestor, Nefertari Lili who was one of the First Twenty founders of the World Government, but who disappeared following her decision to abdicate living in Mary Geoise; he asked if the Elders had any records of what became of Lili. The Elders claimed to have no answer for this, and Cobra then asked about the meaning of the initial D., revealing to the Elders' shock that a letter from Lili had been passed down through the Nefertari Family. Imu then entered the room and sat on the Empty Throne, and the Elders were shocked at Imu's decision to be revealed to Cobra. Imu talked with Cobra about Lili and the D., and the Elders drew flintlocks as they intended to execute Cobra for seeing Imu. Imu was the first to strike Cobra, but then along with the Elders was attacked by Sabo using Hiken. Following the attack, the Elders and Imu transformed into beastly forms and pursued Sabo as he fled the room with Cobra. Following another strike by Imu, Cobra sacrificed himself to allow Sabo to flee and was promptly killed; the Elders then noticed that Wapol had been spying on the affairs in the room through a small peephole.

Following the Levely's conclusion, the Five Elders discussed the Raid on Onigashima, namely the orders they had given to eliminate Nico Robin and prepare to have the Marines assume control of Wano Country in the aftermath of the battle. They then discussed the potential of the Gomu Gomu no Mi, or the "Hito Hito no Mi, Model: Nika" awakening, and commanded Guernica to interfere in the battle between Monkey D. Luffy and Kaidou to eliminate the former, who possessed the fruit's power. Guernica sacrificed himself to allow Kaidou to inflict a deadly blow on Luffy. The Elders talked about how the fruit had eluded them for the last 800 years, and Mars noted that it seemed like it was actively doing so.

The Five Elders' attempt to eliminate Luffy proved a failure, as they later came to learn that the Gomu Gomu no Mi had indeed been awakened and Kaidou and Big Mom had both fallen in battle. Because Wano's borders were not opened as was initially expected, the Elders called off the Marine invasion but maintained the order for Robin to be captured.

Egghead Arc
The Five Elders were in the Room of Authority discussing Sabo and the growing issues with Vegapunk on Egghead when they received a call from Imu, who wished to test out Vegapunk's Mother Flame invention on the Lulusia Kingdom. Mars had no issue with this, saying the world moved as Imu dictated and noting that there were growing sentiments of rebellion in Lulusia. Imu also gave them the command to find and seize Nefertari Vivi. Later, the Elders received a call from Marine Headquarters revealing they had traced Sabo to Lulusia, and the Elders took note of this stroke of fortune as the Lulusia Kingdom was completely annihilated by the Mother Flame soon afterward.

Major Battles

 * Five Elders and Imu vs. Sabo

Non-Playable Appearances

 * One Piece: Grand Battle! 3
 * One Piece: Grand Battle! Rush!
 * One Piece Odyssey

Trivia

 * Mars is the fourth planet in Earth's Solar System, fitting with the Elders' planet-themed names.
 * The name "Marcus" (as a given name and praenomen) is thought to have been derived from the god Mars, which means that both parts of his name share the same origin.

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