Eytukan is an elderly male Cro-Magnon who came from Late Pleistocene Siberia 40,000 years ago. He is the shaman of the same tribe that Sheo and her brother live amongst and the ancestor of Rebecca. When Eytukan and the rest of the tribe arrived at the park when they followed Allen and the team from their timeline, he began to use his shaman abilities to heal members of a tribe of Neanderthals which also lived during their time despite being from a different species of hominid.