K'un-L'un is the stronghold of a colony of humanoid aliens whose spaceship crashed in a pocket dimension that intersects with Earth. The dominant lifeform of this dimension is the H'ylthri. Its most prominent inhabitants are Master Khan, Lei Kung, and Yu-Ti—the ruler of K’un-L’un. The usual means of access to this dimension is through magic. A tradition in K’un-L’un, that is centuries upon centuries old, is the selection of the champion of their realm—for only those who have proven themselves strong enough to achieve the ancient power may claim the title of the Iron Fist.
