Oh! great, whose real name is Ito Ōgure (大暮 維人, Ōgure Ito^?, born 22 February 1972 in Hyuga, Miyazaki, Japan), is a Japanese manga artist most recognized for the manga series Tenjho Tenge and Air Gear. In 2006, he received the Kodansha Manga Award for shōnen for Air Gear. Oh! great also created the adult series Silky Whip. Apart from working with manga, he designed some of the alternate character outfits in the PlayStation 2 version of Namco's 3D fighting game Tekken 5, and a guest character in Soul Calibur IV named Ashlotte.

His pseudonym "Oh! great" is a play on words. His pen name, written in Japanese order (family name before given name), is "Ōgure Ito", which is pronounced similarly to and can be romanized the same as the Japanese rendering of the English words "Oh great," ōgurēto [oːɡuɽeːto]. Furthermore, "Oh" can mean "king" in Japanese, making it possible to read the name as "the great king".

Characteristics of Oh! great's style include violent plots, the use of English words amidst kanji and highly sexualized female characters that provide large amounts of fan service.

The Great Spirit, also called Wakan Tanka among the Sioux, the Creator or the Great Maker in English, and Gitchi Manitou in Algonquian, is a conception of a supreme being prevalent among some Native American and First Nations cultures. According to Lakotah activist Russell Means a better translation of Wakan Tanka is the Great Mystery.

The Great Spirit or Great Mystery is generally believed to be personal, close to the people, and immanent in the fabric of the material world. Lakotah prayers refer to Him as Grandfather; however, not all Nations assign gender, or only one gender, to the Great Mystery. Chief Dan Evehema, a spiritual leader of the Hopi Nation, described the Great Spirit as follows:

"Old Man" is how the Great Mystery is "known" by the Blackfoot people. Old Man personally created all things and personally instructed the Blackfoot people on how to attain spiritual wisdom in daily life: Old Man is not an anthropomorphic and anthropopathic god like Jesus, nor a panentheistic deity as in Brahmanism out of which the whole fabric of existence is derived. Rather, Old Man is simply acknowledged to exist in the sense of the Aristotelian "prime mover" ("prime mover" idiom provided for the benefit of European audiences) and the traditional teachings are attributed to "him" as a source. There are specific tales regarding Old Man doing this or that or saying this or that but rather than being enshrined in a ritualistic, symbolic, or codified religion, these teachings are more used to guide individuals and communities on a moment-by-moment basis. It is not a set of laws or code of living as much as a cultural lifestyle which focuses on the daily needs of the individual and the nation rather than any "universal" speculation. [op cit.]