Rafiki is a mandrill. A mandrill is a species of Old World monkey, native to parts of Africa and classified as a vulnerable species by the International Union for Conservation of Nature (IUCN).
Mandrills are the world’s largest monkey species, with males typically weighing around 47 kg (104 lb). The mandrill is also noted for its colorful face and rump, which are brightly colored compared to its fur-covered body.