Lekgolo

The Lekgolo are a genetic species of unified sentient eel conglomerates in the Covenant government. They are called Hunters by the United Nations Space Command.

Introduction
Hunters stand 12' tall, though in their combat state they crouch to approximately eight feet. Hunters fight with Fuel Rod Guns (Halo 1) and modified Fuel Rod Cannons (Halo 2) integrated directly into their armor. They carry an enormous and nearly-impervious metal shield made of an unknown alloy as thick as the armor plating on Covenant Starships, which they sometimes use as a melee weapon.

In Halo 2, the modifications to their Fuel Rod Cannons are similar to the modifications Cortana made to Ascendant Justice's weapons. The fire is more sustained, and more devastating.

According to Halo 2 the Hunters needed to be tamed and the Arbiter played a significant role in their taming.

Culture
Hunters almost never associate (or indeed even communicate) with other Covenant client races, save for the Elites. They are dismissive, scornful, and arrogant to the "lesser" Covenant races, and are utterly contemptuous of their foes. Hunters were forced into the Covenant by the superior starship technology of the Elites - on the ground they were mostly, if not always, victorious. Faced with extinction by orbital bombardment, they joined the Covenant. And it was here, that it was assumed, a previous Arbiter was killed during the Taming of the Hunters. Hunters have three names: personal name, bond name, and line name. The personal name is given at birth. The line name represents the genetic heritage, being the name of the most successful Hunter of his ancestors. If a Hunter reaches a certain level of status, his offspring will have his personal name as their line name. The bond name is taken between bonded pairs, a relationship about which little is known, but it appears to be something like a lifelong brother, and a Hunter that has lost its partner can and will become extremely aggressive. Bonded Hunters consider themselves brothers and are fiercely protective of each other. Examples of Hunter names include Igido Nosa Hurru, and Ogada Nosa Fasu.

Hunters are a warlike species, though some are known to recite poetry and meditate in their spare time.

Hunters are nearly never seen alone, and are very dangerous as they work in pairs.

During the Covenant Civil War, the Hunters sided with the Elite Separatists. No reason is known yet but it is likely due to their deep respect for the Elites, or that the Brutes struck the Hunters first, betraying them. Hunters are equipped with an extremely devastating fuel rod cannon melded into its arm. Unlike a normal Fuel Rod Cannon, Hunters with their cumbersome bulk and strength are able to withstand the recoil and produce a more lasting and lethal blast. If an enemy gets too close, the Hunter will attempt a clumsy but dangerous melee attack with its shield, severely injuring if not killing the enemy. Once its partner is killed, the Hunter becomes much more aggressive and will chase the player, attempting to avenge its partner's death by only melee attacks.

Frank O'Connor has said: "Hunter society is complex and we have seen but the tiniest fraction of it. There are some fundamental facts about Hunter biology that mean the combat type is just the tip of the iceberg."

Physiology
The Hunter is not a singular organism, but rather a hive creature composed of multiple small, orange, worm-like beings (called Lekgolo eels by fans) that form a singular collective consciousness and act as one. The extremely strong armor that covers them has the dual purpose of both protecting them and maintaining body shape. Hunters also have very sharp, long spines made of the worms that make up their body. Hunters have been known to impale careless Marines upon these spines when surrounded. Hunters generally growl during battle but will sometimes talk and make remarks like the other Covenant species. Instead of using vocal chords, they vibrate their bodies to make a low rumble that is described as "more felt than heard" to produce speech.

It is theorized that Hunters reproduce asexually, however there is no way to be certain. The Hunter's physiology, being separated into many singular components, make it immune to flood infection, as no central nervous system exists for them to utilize, and single worms are too small to be used as the Flood's tool. They are invulnerable to becoming one of the Flood's collective, but this does not stop the Flood from attempting to kill Hunters on sight. Many believe that the Flood Juggernaut is an infected Hunter, but this is most likely untrue for more than one reason.

Combat
In Halo: Combat Evolved, Hunters were rarely difficult to defeat; their AI was simplistic, their shots and melees were slow and awkward; they could not move fast enough to run down even a back-pedaling Spartan. Furthermore, they could be killed by a single shot from the M6D, as long as it hit the exposed orange area in the middle of the body or the similarly unarmored 'neck'. Other weapons, especially the shotgun and sniper rifle (for very short and very long distances respectively), were equally deadly. The rocket launcher was always effective, but never particularly necessary. Grenades were effective, as long as they were behind the Hunter, and a plasma grenade stuck to the orange was a near instant kill. Plasma weapons were often ineffective, as was the needler, and the assault rifle took so long to make a kill that other weapons were far more useful. Still, no player with even a modicum of skill feared confronting a Hunter on open ground. It was even possible, if you were daring and quick, to repeatedly melee the Hunter until it died. On Legendary, some players regarded Hunters as the least challenging enemies in the game. However, Hunters really gained the upper hand in the cramped hallways of the Truth and Reconciliation and the Pillar of Autumn, where there was little space to dodge the fuel rods or crushing melee blows, and no room to utilize the most commonly used anti-hunter weapon: the rocket launcher. Still, these levels were full of shotgun ammo, and the shotgun is reasonably useful against Hunters at close range.

If you stood far away from the Hunter, it would use its fuel rod cannon. However, the shot was slow, and very easy to dodge. It was also easy to anticipate, as the barrel of the weapon glowed bright green before firing. If you were in melee range of the Hunter, it would also use its arm shield in an attempt to crush you, resulting in serious damage, if not death. However, 'attempt' is the operative word, as these attacks were simple to anticipate and dodge. The Hunters have undergone a number of changes for Halo 2. Most notable is their new weapon: although similar to the old fuel rod gun, the new Fuel Rod Cannon fires a continuous beam of green plasma rather than an arcing projectile. This new weapon is more damaging if not dodged carefully. In addition, the Hunters are over 25% bigger and faster, making combat against them much more hectic. They have gained a new move, too: the ability to attack an enemy behind them. This effectively prevents the old strategy of 'dodge-and-fire' with the pistol, although the Halo 2 pistol is almost ineffective against Hunters anyway. Finally, the Hunters have much more health. On Legendary, not a single weapon (except, of course, the Scarab Gun, which is never present during a fight with Hunters anyway) can kill them in one hit. Even a sniper or beam rifle will take two shots to kill a Hunter on Legendary. Often, the most effective weapon against them is the one that does the most damage: the Rocket Launcher is greatly effective, as is the Fuel Rod Gun.

Grenades are no longer very effective against Hunters, and it will usually take a large amount of them to take one down. However, grenades, handheld or fired from the Brute Shot, will disorient or stun them, which may cause a charging Hunter to change directions, during which time you can easily shoot at their exposed flesh.

Trivia

 * "Lekgolo" is Tswana for "one hundred", possibly a reference to their hive-like physiology.
 * Hunters were first seen by humans in 2552 in The Battle of Sigma Octanus IV.
 * Hunters are responsible for security aboard a Covenant Warship. One of their duties is to protect the vessel's Ship Master, and failing that, enact revenge on his assassin.
 * In Halo: Combat Evolved, if you look closely at a Hunter (when dead) the orange fleshy parts glow in an on and off motion. This can be seen more easily in a dark place.
 * Lekgolo blood smells like burnt plastic.
 * It is suspected the Hunters are Flood Juggernauts but due to the worm like structre it is impossible.

Internal

 * Taming of the Hunters
 * Fuel Rod Cannon