Feral ghoul reaver

The  is 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 has significantly more HP than any other form of feral ghoul. It is also set apart from other feral ghouls by its unique ability to throw a grenade-like explosive called "Radioactive Gore", improved speed, and a special effect that emits from its body similar to the Glowing One's radiation pulse.

Characteristics
Both in Broken Steel and Point Lookout:

Feral Ghoul Reavers are really tough enemies, 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, like a Deathclaw's, tend to pack quite a punch, and even high level players are prone to being easily crippled/quickly killed in short order if not careful. Their radioactive gore easily cripples limbs and is thrown almost always with deadly accuracy. Reavers seem to be highly perceptive as they (unlike Deathclaws) can even detect High Level players in Sneak Mode wearing the Chinese Stealth Armor. The Ghoul Mask is very helpful as they will not attack you if you are wearing it. Similar to Glowing Ones, they emit radiation in large quantities.

Locations
Multiple Reavers can be found during "Who Dares Wins" in the Presidential Metro and in various places, like the American Museum of History, around the Capital Wasteland if the player character is of high enough level.

They can also be found in Point Lookout, most prominently at Turtledove Detention Camp, Jet Crash Site and Ark & Dove Resting Grounds.

Feral Ghoul Reavers can appear in Fallout 3 prior to the main quest being completed if the Broken Steel add-on is loaded; the same can be said for Super Mutant Overlords and Albino Radscorpions. Franklin Metro Utility, in particular, will be filled with them at high levels.

They can also be found in Mothership Zeta, in the Cryo Lab, in a room with an alien turret, several aliens, and many cryo pods that contain ghouls and raiders. Some of the ghouls can be Reavers.

Bugs

 * Feral Ghoul Reavers may 'have a fit', making them invincible for a short period of time. If this happens, shoot for the legs. Grenades are also effective. Fortunately, this bug seems to be limited to the Reavers in the Presidential Metro battle. You can also successfully target them in V.A.T.S. but all shots fired will miss. (confirmed PC and 360)
 * It is possible to get split-second appearing message that tells you that Radioactive Gore can be picked up, the message is the same one as for objects shot out of the Rock-It Launcher. (confirmed on 360, PS3 and PC).
 * If a Feral Ghoul Reaver is killed while "having a fit," their limbs may be stuck in mid-air. Such as when a body clips with a wall, but instead there is nothing there. (confirmed)
 * Sometimes when the Feral Ghoul Reavers throw radioactive gore, it won't explode, and will keep throwing it, making them easy to kill. (confirmed PS3).
 * Feral Ghoul Reavers have no swimming scripts and animations, so they walk underwater.
 * Rarely, when having a fit, Reavers won't stop their fit meaning they can become invincible and a real pain but can still be killed with grenades and leg shots. Plasma grenades are effective. Reloading the game usually sorts this glitch out (confirmed 360).

Appearances
s appear in the Fallout 3 add-ons Broken Steel and Point Lookout.