Brain › Entertainment: Video GamesWhat is the lowest ranking species in the Covenant hierarchy in the Halo series?DroneBruteEliteGruntAnswerThe correct answer is D) Grunt.More Entertainment: Video Games questionsWho controls the Flood in the Halo series?What is a SPARTAN in the Halo series?What species is the Didact in the Halo series?Which of the following does the UNSC use to transport troops in the halo series?What is the largest UNSC ship in the Halo series?What city does Halo 3 ODST take place in?Play Brain · Practice