Datoo was a human male military officer who held the rank of colonel in the First Order. Around thirty years after the Battle of Endor, Datoo was in charge of the primary fire control room on the First Order's Starkiller Base superweapon. Under orders from Supreme Leader Snoke, he oversaw the weapon as it destroyed the Hosnian system, the location of the New Republic Galactic Senate. The weapon then began preparing to fire on the Ileenium system, where the Resistance headquarters was located; however, Resistance forces then attacked the superweapon. As it became clear the base was going to be destroyed, Datoo was shocked to see Lieutenant Rodinon trying to leave the control room, and questioned where he was going. Starkiller Base then exploded.