Kasius is the main antagonist of the first half of Season 5 of the TV series Marvel's Agents of S.H.I.E.L.D..
He is a tyrannical Kree nobleman and perfectionist from an apocalyptic future in the year 2091 and the overseer of the Lighthouse which shelters the remaining human survivors. Growing tiresome of his position of the Kree Empire with observing the survivors, he intended on wiping them all out so he can leave Earth with his fortune. However, after S.H.I.E.L.D. arrived from the past, his plans spiraled out of control with the humans uprising against him, which eventually led to his death.