My favorite GIF. I think I made this last year. KHR. :D
Mukuro Rokudo (六道 骸, Rokudo Mukuro) is one of the main characters of Reborn! and is the first season’s primary villain. Although, he later became the Guardian of Mist.
Portrayed as the series’ first primary antagonist, Mukuro Rokudo is introduced as a 15-year-old Mafia criminal wearing a Kokuyo school uniform with a so called “pineapple" hairstyle. He is the leader of the Kokuyo Gang, which consists of heinous criminals who have recently escaped from Prison. However, later on in the series, he takes on a more supportive role for the series’ main characters, becoming somewhat of an ally rather than an enemy. Although, he prefers to not consider himself as one of their allies and tries to avoid any involvement with Mafia organization.
As revealed in a flashback sequence, Mukuro Rokudo was born into the Estraneo Famiglia and was one of the children experimented on by the Estraneos. One day, Mukuro killed his captors with his Abilities and offered Chikusa Kakimoto and Ken Joshima, two children who were also experimented on, a chance to join him in his new quest to destroy the “insignificant” world.
Later on, Mukuro was adopted into a Mafia Family in Northern Italy. However, unbeknownst to the Family, Mukuro was periodically controlling one of its Members, Lancia, and using him to kill others, eventually making him kill his own Family. Since then, Mukuro had Lanchia under his complete control, using him as a “Fake Mukuro” who is eventually mistakenly identified as the real Mukuro in a picture, whereas the real Mukuro is said to have never been photographed.
What else Mukuro did in recent years remains a mystery, but it is mentioned that he, along with Ken and Chikusa, had been locked up in a high security Italian prison, which is reserved for the most dangerous of Mafia criminals who have even committed crimes against the Mafia itself. Two weeks prior to the Kokuyo Gang’s appearance in the story, they staged a jailbreak on the eve of Mukuro’s execution, resulting in the death of several wardens and prisoners, and later the escape of other dangerous criminals.
Despite often being shown with a playful smile, Mukuro is seemingly apathetic to the suffering of others. Appearing as the series’ first antagonist, Mukuro is not averse to disposing of those who get in his way and is not easily intimidated, usually speaking to others in a very direct and arrogant manner. He cares little for others, and simply considers people to be “toys” or “tools” he can sacrifice in order to get to what he wants.
However, despite claiming that people are just toys, he seems to tolerate both Ken and Chikusa, and even protects them when need be, though he does not directly do so in front of them.
He later sacrifices himself in order for Ken and Chikusa to safely escape from the Vendicare, and he also agrees to be the Guardian of the Mist in exchange for the two’s safety.
Mukuro, along with Ken and Chikusa, is implied to have a strong dislike for the entire Mafia underground, possibly due in part to the experimentations he suffered as a child. However, not only does he have the desire to destroy the entire Mafia, he also wants to invoke world suffering by starting a world war, claiming to want to cleanse the world with darkness. Even after becoming the Mist Guardian, Mukuro still claims to no longer be part of the Mafia, having been exiled from it, and continues to view the organization with great contempt, though he now prefers to avoid any involvement with them. Mukuro is also quite knowledgeable of the Mafia’s dark secrets, possibly even the secret behind the Arcobaleno, a group of the Mafia’s most powerful infant hitmen.