Rankings

"'What is the Ranking of Kings? Does he have many prominent knights in his service? Does he have many subjects and are his towns thriving? And most of all, is the King himself as powerful as a hero? These conditions determine the ranking of each nation's King.'"

Description
Rankings of Kings are determined by a committee which sends judges to the kingdom to conduct evaluations.

When a new king takes the throne, a judge is sent for evaluation him, as seen after the passing of King Bosse.

Kings in the first place can get one item of his choosing from the Divine Treasure Vault. Each succesive king chooses the same treasure but afterwards they either go missing or lose their minds. It is unknown what this treasure is.

Criteria of Evaluation
The rankings are determined by a number of criteria.

Prosperity of the kingdom
The judge travels around the kingdom to observe and evaluated the towns' population, size and prosperity.

Strength of the King
The kings are to fight a golem made of stone to determine their strength. King Bosse, who destroyed the golem in a single hit is said to be number one for this criteria.

Quality of knights
The knights under the service of the king are also evaluated, possibly with the same golem used in the strength evaluation.

Unknown Rankings
There are several characters who have been, or are implied to have been, kings.