Art Sample: Arc 1 Villains, the Robbins Company (Patreon)

 The Robbins Company will be your primary foes throughout the course of the first Arc. Working for a mysterious benefactor, the Robbins Company seeks out wild monsters and lone Frontiersmen on wild islands to bring them in. This is highly, highly illegal as far as the Guild is concerned. Wild monsters are only to be brought in when they volunteer for it or as eggs salvaged from the wild. There are fairly strict limits on how many can be brought back and held by any one Frontiersman, and strict rules on treatment, care, and raising of monsters.

Poachers bypass all of this. Essence is a very valuable thing, and while the current harvesting method is the most sustainable, it is by no means the only method of harvesting essence. Many monsters body parts could be used in a much more efficient and potent fashion than their sexual fluids. That is why Poachers are still a thing today, and why the Guild comes down so hard on them. The Guild not only wishes to protect its near monopoly on the mass essence trade, but by and large,  its treaties with various "civilized" monsters demand that they crack down on such activities even when the original laws of the kingdom that backs the Guild do not offer such explicit protection to monsters.