Kebo was a HYDRA operative. After the fall of Daniel Whitehall's and Wolfgang von Strucker's HYDRA cells, Kebo became the right hand man of Grant Ward, helping him to rebuild HYDRA. When Kebo was sent to assassinate Werner von Strucker, his team were ambushed by S.H.I.E.L.D. and Kebo was killed by Bobbi Morse.
Kebo is Grant Ward's right hand man in HYDRA. Kebo met with Ward in a bar to tell Ward names of remaining heads of HYDRA. Ward was not happy with the insufficient number of names so he fought and threatened Kebo. In Season 3, Kebo became the right hand man to Ward and helps him run his branch of the organization. He was presumably killed by Bobbi when she electrified a swimming pool that Kebo had fallen into.