There is a creature out in the ice that stalks those of us on Terror with the intent to harm us. It resembles an enormous, white bear, and the Netsilik people of this region call it the tuunbaq - which is an approximation of the actual Inuktitut word for the creature, if you care about semantics.

Our ships, Terror and Erebus, came to this land searching for a trade passage. Our ships were frozen in place and one of my men inadvertently killed the creature's shaman during a search for leads through the ice. The tuunbaq has been seeking revenge on us ever since that day.