Among the largest of the Giants, Hill Giants are primal creatures with simple mindsets and lifestyles. Much like their namesake, Hill Giants have rotund, hulking bodies with masses of vegetation growing on the tops of their heads and all along their backs. The older a Hill Giant gets, the more diverse the ecosystem on their back becomes, with older giants being able to grow trees, flowers, hanging vines, and spiny thorns. Despite their size, Hill Giants have developed a technique to use the vegetation on their backs as camouflage. When standing completely still, Hill Giants are able to become indistinguishable from a normal hill, blending perfectly with their surroundings.

Hill Giants view life through a very basic lens. They tend not to worry themselves with the greater machinations of the world, instead focusing on what's best for themselves and their communities. Hill Giants tend to value strong leaders and ancient traditions, often using song to tell their young of the stories of old. A Hill Giant's main focus is that of their community, often taking actions to strengthen it and ensure it prospers. Everything is shared among Hill Giants, even their young. Infant Hill Giants will often be raised by three or four mothers, and they grow up viewing the entire tribe as their immediate family.

Strong and simple, Hill Giants are efficient hunters who fight for the prosperity of their families, no matter what gets in their way.