A companion is an Earth-Jørn hybrid animal that is similar to a pet, but forms a closer bond with their human than the typical Old Earth cat or dog.

The term was coined by the first-gen Rider Beatrice Shrew to describe her relationship to the two animals (a ruc-pard and a flurry-thyt) that helped her explore the Jørn wilderness. Beatrice found the terms ‘pet’ and ‘mount’ grossly inadequate to encompass the mutual respect and cooperation that existed between her and her companions, and which was so necessary to their survival.

Instead, Beatrice described the relationship as a partnership in which they all had a role and relied on each other to do their part, and through which they became more to each other than just a friend, but an integral part of their being.