The Engineer, known as the Huragok by the Covenant, is a race of gas-filled alien creatures created by the Forerunners to perform maintenance on Forerunner structures. The Engineers are the only way for the Covenant to repair their building and vehicles during combat and are very effective, especially once upgraded. They automatically search out damaged machinery to repair. They have no defenses or weapons and are easily killed, although they can repair each other, but not themselves.
The Hunters, or Mgalekgolo, are massive colonies of small work-like created known as Lekgolo. These colonies of many smaller creatures take the form of huge, heavily-armored bipedal infantry. Carrying a massive shield and a Fuel Rod Gun, Hunters occupy a strong anti-vehicle role. Always appearing in pairs, they are more than a match for most UNSC Vehicles.
The Grunts, or Unggoy, are the foot soldiers of Covenant ground forces. Used in large numbers to overwhelm enemy positions, Grunts are weak as individuals but are a force to be reckoned with in groups. Almost always lead by a higher-caste Covenant infantry unit, such as a Brute or Elite, they can wield most Covenant weapons.
The methane tanks that they breath from sometimes explode with funny results.
The Kig-Yar, or Jackals, is an Avian species often seen with shields and longer range weapons. They make up the bulk of the Covenant ground forces (after the Grunts). The Jackals are often used in scouting or sniping roles, using their superior senses to their advantage.
The Master Chief, John-117, didn’t always fight alone. He was part of the SPARTAN-II program that started with 150 child candidates, 33 of which made it through the intensive training and physical augmentation procedures. On November 1, 2525, the program was accelerated with the discovery of the Covenant threat and the Spartans adopted their MJOLNIR armor. The war was underway, and the UNSC had over thirty of these super soldiers at their disposal.
These specialized Marines are outfitted with a Napalm spewing NA4 Flamethrower. First seeing action during World War I, flamethrowers have changed remarkably little since those early days in the trenches. These specialized Marines carry a potent mixture with them in a tank that is spewed through a gun onto the target. A variety of mixtures have been created for work in various atmospheric and gravitational conditions, but they all work similarly to fry just about anything.
