Atelihai!
If you've ever read any Inuit folklore, you'll realize that Giants play a big role in their stories. There are basically 3 sizes or kinds:
Arctic Titans
These giants are so huge that they can cause tsunami when they go fishing, and their heads are literally in the clouds or among the birds. They are seldom hostile to the Inuit, but instead try to interact or befriend them, with equally comic or tragic consequences. Ever hear the story of the Titan who decided to wife swap with an Inuit man? It went just about as well as you'd think...
Arctic Giants
This next group, often called Tuniits (spelled with many variations from Alaska to Greenland) tower above humans, and are often helpful or wise. They may gift magical weapons of enlist Inuit to aid them in their duels, which they are said to have engaged in often, leading to their extinction. They are solitary and strange, but may take a village under their wing if lonely.
Arctic Ogres
The word Tuniit is often used for these as well, but the stories present a different picture. These Tuniit are larger than Inuit, but not by much. They have immense physical strength, but are also supposed to have disgusted the Inuit by their poor manners and hygiene. The menfolk steal Inuit umiak (rowboats) for their own fishing, and may be cannibal, although stories of kind or helpful Ogres exist. The women for their part cook meat by keeping it in their clothes (Tartar steak?), but may kidnap men they like. In fact, there is a whole subsection of she-ogres that kidnap babies, either to raise as ogres or to eat. Tuniit ogres are said to have lived in large stone houses which they built by hand, and to have slept upside down inside them.
Archaeologists have indeed found stone structures built across the Arctic, and the prevailing theory among Anthropologists is that these were made by the Dorset Inuit, the precursor of modern Inuit. The ancestors of the Inuit we know are called Thule, who spread out from Siberia across the Arctic 1000 years ago and dominated the region with their superior technology, which included barbed harpoons with animalskin floats so that prey would not sink. It is believed that the Thule drove the larger but less sophisticated Dorset Inuit into extinction, based on the many stories of tricking, trapping, or killing Tuniit ogres that have survived.
And Historians believed that there was ANOTHER group of Inuit long before the Dorset...
So NUNA will include both many kinds of Arctic giants, as well as disappeared races.

