The most useful monster.

A fight and a battle are different things: a fight is when two individuals fight one-on-one, while a battle is a clash between groups of people (armies). How does a person become a world boxing champion? In a one-on-one fight, where each person represents their side (country), it becomes clear who is stronger in their weight category. Let's say there's a boxing match – an American and a Mongolian in the ring. Do all Americans come out into the ring with their natural increase in numbers? In such a battle, the Americans would naturally win because there are more of them. You shouldn't judge the strength of a creature by the number of its offspring, etc., but rather by the quality of the fighter. At its level (the weight category of a boxer), a Vampire is the strongest creature, and no one can defeat it one-on-one at its level. Moreover, the topic is called "The Most Useful Monster," not "Monsters."