Marcus Mars

Saint marcus mars is one of the five elders who publicly head the world government, holding the title of warrior god of environment. Along with the other elders, he is one of the main antagonists in the final saga and one of the overarching antagonists of the one piece series. 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.

Mars has an ability that allows him to transform into a giant bird-like creature, it also has a ring around it. 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. Mars carries a flintlock, which he intended to use to execute nefertari cobra for seeing imu.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.