The great ape Gigantopithecus was a genus of large primates that lived in Asia, primarily during the Pleistocene epoch. Gigantopithecus is closely related to modern orangutans (genus Pongo) within the great ape family. These large primates were not direct ancestors of humans but were part of the broader family Hominidae, which includes all the great apes—humans, chimpanzees, gorillas, and orangutans. Gigantopithecus stood out due to its enormous size, with estimates suggesting it could reach up to 3 meters (9.8 feet) in height and weigh up to 500 kilograms (1,100 pounds).