Kingbo

 (J, J) is a character in Ousama Ranking and its anime adaption. He is a former king who lost his kingdom and later became a criminal. He was imprisoned in the Underworld until being freed by Miranjo.

Appearance
Kingbo is a very tall, muscular man with white eyes, unkempt gray hair, a long face, and numerous crowsfeet around his eyes. He wears golden plate armor, a small helmet that simulates a crown, and a flowing red cape.

Personality
Like the other criminals freed from the Underworld, Kingbo has a vicious and savage disposition, and doesn't think twice before attempting to murder his benefactors or assault Ouken.

It's suggested in flashback that Kingbo has always been a vicious man, but that when he was a king this side of him was tempered (at least slightly) by his family and subjects.

It appears he became a king when his father abidcated his throne. His father's final wish was for Kingbo to find some empathy for his subjects, suggesting Kingbo may have been a tyrant.

Kingbo appears to be at least somewhat embittered by the loss of his kingdom, and again in flashback it's revealed that his father slaughtered all of Kingbo's subjects under mysterious circumstances.

Plot
Kingbo is one of the Underworld prisoners freed by Miranjo to conquer the Bosse Kingdom.

Most of the other prisoners considered Kingbo the strongest in the group, and Zokku in particular deferred to him when they took over the throne room. Kingbo took Daida's crown for himself, only to become enraged when he found Ouken sitting on the throne.

After a very brief altercation, he appears to have been slain by Ouken.

Mad King
It's heavily implied that the mysterious Mad King is Kingbo's father. Kingbo's father showed marked disapproval of his son, and encouraged him to find more empathy for his subjects. In spite of this, Kingbo was allowed to inherit his kingdom, only to be nearly killed when the former king returned and slaughtered most of his subjects. This event is very mysterious, but left Kingbo both without a kingdom and deeply embittered toward his father.

Fallen Royalty
Kingbo is a former King, meaning he is considered strong enough to lead a kingdom. He later proved his strength by easily countering Apeas, one of the Four Heavenly Kings of the Bosse Kingdom.

Trivia

 * 's name likely derives from the English word "king" (, Kingu) and the Japanese word for "ruin" or "downfall" (没落, Botsuraku).
 * It's speculated that Kingbo may be the former ruler of the Bo Kingdom. This is due to his name, as well as his passing resemblance to members of the Light clan.