The Threat level is measurement of how much of a threat a creature is. The Threat level ranges from 0(harmless) to 50(Major Threat)
Measurements
Creatures with a threat level of 50 are those that single handedly can destroy the entire world most of these are extinct as even gods and devils have judged them too dangerous.
Understanding the threat levels
50=Destroy the world.
40=Level a continent.
30=Exterminate a Nation.
20=Destroy a City.
10=Kill off a Small village.
5=Kill a grown man.
0=Harmless.