W'Kabi is the former head of security for Wakanda's Border Tribe and the husband of Okoye. Having lost his faith in both T'Chaka and T'Challa due to their failures to capture Ulysses Klaue, the terrorist responsible for his parents' deaths, W'Kabi lent his support to Erik Killmonger after he had killed Klaue, and supported the outsider in his quest to ascend to the throne of Wakanda. When T'Challa returned to challenge Killmonger once more, W'Kabi chose to continue aiding Killmonger and led the fight against T'Challa and M'Baku, leading to him being forced by Okoye to surrender. He was then banished from Wakandan society, although he continued to remain in the nation.