Tsul 'Kalu [pronounced Sool Kaloo] (the slant-eyed or sloping giant) is a legendary figure of Cherokee mythology who plays the role of "the great lord of the game", and as such is frequently invoked in hunting rites and rituals. The Tsul 'Kalu appeared in the season finale of Mountain Monsters third season and is mentioned in the fourth season, and is the second monster of the series to be a subject in three episodes, the first being the Yahoo and the Grassman.
He is said to dwell in a place called Tsunegun'yi. The words Tsul and Tsune and their variations appear in a number of Cherokee place names throughout the Southeastern United States, especially in western North Carolina and eastern Tennessee.
Tsul`kälû' Tsunegûñ'yï is a 100-acre (40 ha) patch on a slope of the mountain Tanasee Bald in Jackson County, North Carolina, on the ridge upon which the boundary of Haywood, Jackson, and Transylvania Counties converge. It is believed Tsul 'Kalu was responsible for clearing the spot for his residence. The name is sometimes corrupted by Europeans to Jutaculla; consequently the area is also known as the "Jutaculla Old Fields". There is also a large slab of soapstone called "Jutaculla Rock" nearby, which is covered with strange scratches and carvings. These markings are said to have been made by the giant when he would jump from his home on the mountain to the creek below.
Another place associated with Tsul 'Kalu, Tsula'sinun'yi (literally "where the footprint is"), is located on the Tuckasegee River, about a mile above Deep Creek in Swain County, North Carolina. Impressions said to have been the footprints of the giant Tsul`kälû' and a deer were found on a rock which was destroyed during railroad building.