Feral Ghoul (Fallout 3)

Feral ghouls are creatures found in the Capital Wasteland in 2277. They are similar in appearance to ghouls, but they have lost their ability to reason and have become aggressive to anyone who isn't a ghoul. This has contributed to the discrimination of ghouls by human wastelanders, even those that have retained their mental faculties. They can only use the primal part of their brains.

Gameplay attributes
Feral ghouls often give a high-pitched screech before attacking enemies. This can be useful for dark areas or areas with objects blocking the players view, especially in the metros of the wasteland and the Dunwich Building. As with normal ghouls, ferals are extremely resistant to radiation; this makes a Glowing One especially dangerous when encountered with regular ghouls, as they constantly emit radiation which will heal their fellows.

Feral ghoul
The basic feral ghoul variant in Fallout 3 wears only a pair of tattered shorts and is noticeably weaker than standard human opponents. They are easily dispatched with one or two headshots or a solid hit in close quarters combat. Despite their noisy shrieks and remarkable speed, they are not much of a threat unless they outnumber the player, or when their character is at a low level.

Some feral ghouls come in different colors as well as different types. Some are a "healthy" pink color, while others are a grimy grey color and also some of them have grey tattered clothes. Their skin colors are different depending on what the human looked like before they turned into a ghoul.

Feral ghoul roamer
Wearing the remains of pre-war combat armor commonly used by the National Guard and US Army, roamers are likely ghoulified troops who were deployed in the DC area when the bombs fell. The majority of them are in the abandoned Metro tunnels where many who couldn't gain entrance to vaults sought refuge.

Although what remains of their armor gives them some protection (more than regular feral ghouls), they can still be brought down quickly with most weapons. However, they do have a tendency to appear in small groups and can be dangerous to a low-level player.

Glowing One
Glowing ones are feral ghouls that have absorbed massive amounts of nuclear radiation. They are reportedly looked down upon by other ghouls. In battle, they sometimes release a massive burst of radiation, severely injuring enemies and healing other ghouls.

When killed, standing close to their corpses will cause the player to become irradiated (usually +1 Rad per second). Their legs are draped in similar rags that the standard version of a feral ghoul would wear.

Feral ghoul reaver
Feral ghoul reavers are a type of feral ghoul which appears in the Fallout 3 add-ons Broken Steel and Point Lookout. The reaver wears what appears to be the remains of metal armor and upon close inspection, reavers' skin appears to "bubble" and other times, "burn", emitting slight radiation and letting dark green "smoke" billow out from the scars on their bodies. If such a reaver is killed by a critical hit from an energy weapon, this "smoke" will even persist on the green goo pile or ash remains.

They are much more combat-worthy than other ghouls and are one of the toughest enemies in the game, more than twice as durable as sentry bots or deathclaws. The reavers are extremely quick, and their lunge attack can send the player sliding back some distance with every strike. Their blows tend to pack quite a punch and even high level players characters are prone to getting crippled quickly or even outright killed if they're not careful.

Reavers have a special attack, where they can rip off pieces of radioactive gore from a gash in their stomach to throw at a target, much like a grenade. Their gore easily cripples limbs. The fact that they're deadly accurate with it doesn't help either though it takes a few seconds to go off after thrown.

Reavers seem to be highly perceptive (unlike deathclaws) as they can detect even high-level player characters in Sneak mode wearing a Stealth Boy or even the Chinese stealth armor.

Swamp ghoul
Swamp ghouls are feral ghouls which inhabit the swamps of Point Lookout. Swamp ghouls wear a tattered pair of shorts commonly worn by tribals, hinting that they were once tribals who didn't eat their punga fruit. They still exhibit the same characteristics of their Capital Wasteland counterparts, but are paler in color and considerably weaker, most likely due to Point Lookouts cloudy and dark environment.

They can be found in various locations in point lookout with high concentrations at Turtledove Detention Camp and Ark & Dove Resting Grounds along with the other types of feral ghouls, including feral ghoul reaver and glowing ones.

Bugs

 * Feral ghoul reavers may become invincible for a short period of time. While they can be successfully targeted in V.A.T.S, all shots fired will miss. If this happens, shoot for the legs, or make use of grenades. To detect when the ghouls are invincible they will begin shaking vigorously. Be careful they are nearly impossible to outrun and inflict much damage even on low difficulties.
 * If a feral ghoul reaver is killed while invincible, their limbs may be stuck in mid-air. Such as when a body clips in a wall, but instead there is nothing there.
 * With feral ghoul reaver, it is possible to get a split-second message appearing that says that radioactive gore can be picked up. The message is the same one as for objects shot out of the Rock-It Launcher.
 * Sometimes when the feral ghoul reavers throw radioactive gore, it won't explode, and will keep throwing it.
 * Sometimes when feral ghoul reavers are throwing their radioactive gore, quickly go into V.A.T.S and target the arm they're throwing it with. Doing so sometimes makes it disappear or get stuck to their hand and they won't throw another one (they'll just run up and attack the player, but if hit, he'll feel the effects as if hit by the gore).
 * Occasionally, if the player knocks down a reaver with the Victory Rifle, they might have a physical glitch, and fly across the map.
 * If a feral ghoul reaver is killed using A3-21's plasma rifle (or any plasma rifle), and the reaver disintegrates into a goo pile, then sometimes they have the same green aura that they had around them before they died.
 * If several Feral Ghouls are clustered together with the Glowing One, they will be damaged instead of healed, by the initial explosion from the radiation pulse the Glowing One uses to irradiate the player.

Gallery
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