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 deeply embittered by the loss of his kingdom, due to the fact that his father (who was a previously ranked as number one in the kings rankings) slaughtered his subjects and destroyed the kingdom.

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 appeared to have been slain by Ouken.

Zokku disposed of Kingbo's body by tossing it off of the ramparts of the Bosse Kingdom's castle, into the surrounding woodlands. Miraculously, Kingbo was discovered by Domas and Hokuro, who appear to have recovered and treated his wounds as they engaged in their own preparations to retake the Bosse Kingdom.

Kingbo's whereabouts during the subsequent conflicts with Ouken and Miranjo, and the end of the attempted coup, are unknown. He reappeared after everything seemed settled, his golden armor allowing him to mingle undetected with the Order of the Underworld as they prepared to leave the Bosse Kingdom.

In a final act of spite, Kingbo revealed himself and slashed the rock encasing the defeated Ouken in half, freeing the immortal once again. Kingbo then lopped off Ouken's head and pitched it hard into the far distance, sneering that it was revenge for his attempted murder. Finally, he stole a nearby horse and road into the countryside.

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 was due to the fact that he chose a treasure from the kings treasure room and tried to decipher the writing of the gods which was on a special type of sword. If correctly deciphered that sword has the ability to show a king the truth and grant them one wish if that king is able to decipher it. He lost his mind after failing to decipher the gods writing on the treasure. Kingbo was 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.