Video Game Collection 2: The Jak and Daxter series Uploaded by communitygirl. A page for describing Headscratchers: Jak and Daxter. Just how old is Keira anyway? Certainly rather younger than Jak, barring adoption which of course . Keira Hagai is a prominent supporting character in the Jak and Daxter series, the daughter of Samos the Sage, and Jak's primary love interest. She is perhaps best known as a talented mechanic, inventor, and racer, having ultimately invented the zoomers, designed and rebuilt a replica of the Rift.