In the planet of Xenith, Monsters and Magic Beasts have a ranking system established by the IMF to help categorize them based on their power level. Below is a list of all the different ranks, 1 through 8, and their corresponding strength level.
Rank 1 - Strength equivalent to that of a Novice Mage.
Rank 2 - Strength equivalent to that of an Intermediate Mage.
Rank 3 - Strength equivalent to that of an Advanced Mage.
Rank 4 - Strength equivalent to that of an Ancestral Mage.
Rank 5 - Strength equivalent to that of a Golden Monarch.
Rank 6 - Strength equivalent to that of a Holy Emperor.
Rank 7 - Strength equivalent to that of a Saint.
Rank 8 - Strength equivalent to that of a Divine God.
*Note that Rank 8 Monsters and/or Magic Beasts are extremely rare. The few that exist have all established a peace treaty with the IMF, so no dangers are present.