Jac was a replicant who escaped Los Angeles with the help of Blade Runner Aahna "Ash" Ashina in 2028. However, Jac returned to the city upon believing in a freedom campaign led by Yotun. However, Jac eventually became disillusioned with the movement.
After Yotun's group captured Ash the following year, Jac freed her and explained that Yotun was reviving unshipped Nexus-8 replicants. Before he could fully explain Yotun's motivations, he was killed by Lelia.