Saint Rossward

• Arrogance and elitism: Like the rest of the Celestial Dragons, he possesses an extreme superiority complex. He considers all people who do not belong to his lineage to be inferior and mere slaves at his service.
• Unbridled Cruelty: He is extremely ruthless and has no remorse whatsoever for mistreating or abusing others. He has a particular fondness for collecting pirate captains to keep as slaves. Furthermore, during the Levely arc, he is seen enjoying using and torturing Bartholomew Kuma as his personal mount.
• Family pride and a sense of responsibility (within his status): Interestingly, he appears somewhat more mature and "responsible" than his spoiled children, Charlos and Shalria, whom he often scolds for their whims or immature behavior. However, this isn't due to any kindness on his part, but rather to his deep pride in his noble lineage and his desire to maintain order within his social class. Furthermore, he genuinely cares for his children's well-being, becoming extremely enraged when Luffy hits Charlos.
• Ignorance of danger: Due to his "untouchable" status protected by the World Government, he lives in total detachment from reality. He is unable to grasp that he faces real physical danger, assuming that no one would ever dare to raise a hand against him, which makes him extremely trusting and reckless in the face of powerful enemies.

The character from the selected region is Saint Rosward, a member of the Celestial Dragons (Tenryubito) in the manga and anime One Piece. He is the patriarch of his family and the father of Saint Charlos and Saint Shalria.
The following details its main story within the plot:

Sabaody Archipelago Arc

Saint Rosward is originally introduced in the Sabaody Archipelago, boasting of his cruel collection of enslaved pirate captains.
Rosward attends the Human Auction House with his sons, intending to acquire new slaves. During the event, his son Charlos attempts to buy the mermaid Camie and shoots the merman Hatchan, enraging Monkey D. Luffy, who delivers a devastating punch to Charlos's face. Furious at the attack on his son, Rosward tries to attack Luffy using the rifle hidden in his staff while ordering a Marine Admiral to be summoned. However, Sanji quickly destroys his weapon, and shortly after, Usopp accidentally falls from the ceiling, crushing him and knocking him unconscious.

Levely Arch (Reverie)

Rosward reappears in the Holy Land of Mary Geoise during the World Kings' Meeting. True to his twisted nature, he is seen proudly riding a severely tortured Bartholomew Kuma, whom he hired as the "ultimate slave" to humiliate the former Shichibukai and Revolutionary Army member. During the ensuing altercation caused by his son Charlos's attempt to kidnap Princess Shirahoshi once again, Rosward is intercepted and defeated, along with the government forces, by Sabo and the revolutionary commanders who infiltrated the government to rescue Kuma.

• Facial features: He is an elderly man with a distinctive updo, a traditional style shared by World Nobles. He has a curly black mustache, a bushy gray beard, and usually wears dark sunglasses.
• Attire: Like others of his social standing, he wears a full-length, padded white suit adorned with various gold and colored medals, buttons, and badges on the chest. He also wears a white cape draped over his shoulders.
• Bubble Helmet: They wear a transparent resin dome or bubble over their head. This accessory provides them with their own oxygen supply, as World Nobles refuse to breathe the same air as ordinary people.
• Accessories: He walks leaning on a long, carved wooden staff with a golden handle, which conceals a rifle inside.