In order to undertake quests from the Hunter's Guild, one must register themselves as a Monster Hunter. Every hunter starts their career with a Hunter Rank of 1. 'Hunter Rank' is basically a measure of personal skill through which the Guild can determine one's ability to complete varying levels of requests. The Guild will also assign rankings to quests, ensuring that only those with the correct practice will carry out such tasks.
Each hunter is also given a Guild Card, which can have its design changed at their own free will. This is used as a method of identification for hunters, as it lists their name, custom title, rank, what tasks they have completed, what awards they've collected, and the species that they have hunted. The cards are typically made from wood, ore, or the body parts of monsters.