The Chief Warden now vice warden of "Impel Down" the most secure prison in the world as well as the user of the Doku Doku no Mi Fruit which allows him to generate poison.
Magellan is a large man, about three times the height of a normal human. He has a face that resembles a mandrill, with very sharp teeth and a thick beard. His fingers closely resemble those of the blue gorillas .He wears bat wings and horn-like ornaments on his head, the latter of which he can pull out and use as weapons. Underneath those horns, he has short black twintail-styled hair. Overall, Magellan resembles a devil.While most guards wear a white-colored uniform, Magellan wears a black-colored suit with a red shirt underneath. His suit features more buttons than those of his subordinates. Draped over his right shoulder is a piece of rope. He wears what appears to be the standard cap of Impel Down workers.Twenty years ago, while Magellan was still the vice-chief, he had the same attire as he did today, with the exception of the uniform being tan instead of black, and a green shirt.
Magellan's biggest quirk is his severe diarrhea brought upon by his frequent consumption of poisoned food. His Devil Fruit power gives him immunity from actually being poisoned, but it doesn't spare him from diarrhea. As a result, he spends approximately ten hours each day in the bathroom relieving himself and 8 hours sleeping. It has been hinted that he is actually agoraphobic and enjoys dark, enclosed spaces.Though he only performs roughly four hours of duty per day as Warden of Impel Down, he still takes his role quite seriously and does not tolerate the prisoners' bad behavior. As he has permission to execute any one of them he sees fit, he shows no hesitation to drench them in his Hydra's lethal poison. Magellan also takes great pride in keeping Impel Down's reputation of being impenetrable and inescapable, and felt personally insulted when Luffy became the first to besmirch that record.
Magellan seems to find it amusing whenever someone he doesn't particularly like gets poisoned or suffocated by his powers, evident when he was seen chuckling at Hannyabal after he sighed a poisonous mist at the latter's direction. While he also does not tolerate Hannyabal's "poisonous" (the actual term used is punned with the word "distant") comments he himself is prone to use them against himself. His ruthlessness applies not only to the prisoners, but also to his own men, as seen berating a guard who was accidentally poisoned by his Hydra. He will also not tolerate any of his own men who abuse their power, as he dismissed Shiryuu for killing prisoners for fun and had him jailed in Level 6. Despite the silly aspects of his personality, he is an extremely serious combatant, speaking little and never toying with his opponent.
Despite his ruthlessness and seriousness, Magellan was one of the many to fall for Boa Hancock's beauty, and neglected to hear the report of Luffy's intrusion when she requested to see Ace immediately, being completely head-over-heels over her.
He has permission to kill any criminal within the walls of Impel Down. He cares little for them and will willingly use extreme measures against them. His tolerance for prisoners runs extremely low. When pushed to react, he covers them in poison and leaves them with no cure. In turn, while most prisoners badmouth Magellan in his presence, they also fear him for his ruthlessness, and in particular, his Hydra technique.
Regardless, Magellan does not abuse his privilege of killing prisoners, and discourages his subordinates from doing so. He jailed Shiryuu and sentenced him to death for killing prisoners for fun.
Magellan holds a particular grudge against Luffy , the first man to ever break into Impel Down which is not only a tarnish to the Great Jail's perfect record since Kinjishi, but also a personal insult to himself as the Chief Warden. This hatred only intensified when Luffy led a large amount of prisoners on an attempted mass-breakout, causing the prison to face one of its greatest crises. Magellan swore that he would not allow Luffy to rescue Ace, nor let him step outside of the prison. Unfortunately, this vow was not kept, as Luffy successfully led a mass-breakout army out of the prison, leading Magellan to suffer the ultimate humiliation. To this end, Magellan took his revenge on the prisoner who stayed behind to help Luffy's escape, Mr.2 .
As the warden of Impel Down, Magellan has full control of the prison. However, because of his constant diarrhea, he spends most of his time in the bathroom. Adding to the fact that he sleeps approximately eight hours per day (And discounting meal times and breaks), he only works for approximately four hours per day doing his job.Nonetheless, he has both the authority and the ability to execute any of the prisoners within Impel Down as he sees fit.Magellan also seems to have great resilience, as he took one of Luffy's second gear attacks straight on and managed to stand back up to continue fighting. He has also been on the receiving end of multiple shots of cannon fire without any resulting injuries, and has easily blocked a wax-covered Gomu Gomu no Stamp with one arm. Only Emporio Ivankov managed to wound Magellan's forehead after a short duel.