Gallifreyan

The Gallifreyans are a humanoid species native to the planet Gallifrey. Externally, Time Lords are identical to humans. They presumably have all of the same biological traits as the Time Lords, such as two hearts, the power of regeneration and respiratory bypass system. The Gallifreyans were the first sentient life in this universe, as well as the first sentient beings in this universe. As a result their evolutionary pattern was imprinted on the universe's morphic field, making the development of humanoids far more likely. The oligarchic rulers of the species are the Time Lords.