An interesting point is that, in the Hyborian age stories such as "Beyond the Black River", when they populated the western edge of Europe and share a border with Aquilonia, which tries to push them further west to colonize new provinces, the Picts show clear Native American influence, in their appearance, dress, armament, manner of conducting wars, and even the place names of the new Aquilonian provinces. It's hard to tell whether this is a case of inconsistency on the part of Howard, or a throwback to their earliest origins and savagery, as the Picts who Conan battled during the Hyborian Age are definitely more primitive than those Kull knew many millennia earlier. The story "Kings of the Night", in which Kull is summoned forward in time to help battle a Roman army, references a decline of the Picts after the age of Kull, specifically noting the Picts lost the skills of metalworking. The Picts described in stories such as "The Dark Man", set in the early Middle Ages, portray them as more primitive yet, with a Neolithic level of technology such as flint arrowheads. These Picts are clearly a people at the last stages of decline, and are living as a hidden tribe of savages of whom their neighboring Norse, Scottish, and Irish peoples are not aware of.