[b]This may be my craziest Halo idea/thought ever concocted, but I'm going to post it. [/b] What if in the last Halo game Chief is captured by the Didact and assimilated. The Didact, not wanting to see Chief's super soldier potential go to waste, uploads his personality and combat skills into a very powerful promethean knight. Chief's personality, locked in the promethean database of assimilated humans, awakens due to the powers the librarian gives him in Halo 4. Chief's personality takes form and goes on a mission inside the database to gain control of his new promethean form, maybe even running into Cortana along the way. After chief gains control of the knight the player takes control and goes on a rampage destroying other prometheans and covenant troops, all the while the Didact is trying to regain control of the promethean knight (sort of how the gravemind interferes with chief's mind in Halo 3). There could be two possible ways of ending this, Chief either finds a way to become human again and save those assimilated by the didact or he defeats the didact and stays with cortana and the rest of the assimilated humans, covenant, and forerunners in the database.