Super Mutant Behemoth

Super Mutant Behemoths are giant Super Mutants living in the ruins of Washington, DC. There are five in total, and they do not respawn after you kill them. There is an achievement/trophy in Fallout 3 entitled "The Bigger They Are..." obtained by destroying all five. These giant creatures are created by the Forced Evolutionary Virus (FEV).

Characteristics
Super Mutant Behemoths can be very difficult to kill, as they are the most resilient enemy in the game. But usually when you encounter them, they are being fought by a certain group such as the Talon Company, Brotherhood of Steel, or Raiders. These groups of soldiers will usually pack a punch on the Behemoth, knocking off a good chunk of health for you to finish him off. Take a look at the Strategies section for information about how to kill these giant beasts.

The general concept of all Vault 87 super mutants is that the older they become after being exposed to the F.E.V. the bigger and stronger they become. Super Mutant Behemoths are as big and bad as it gets, clearly making them the oldest in the Capital Wasteland of all the Super Mutants. All behemoths in Fallout 3 look unique, some don't wear armor, some don't have weapons, etc.

Statistics

 * Level: 20
 * Health: 2000
 * SPECIAL: 5ST, 5PE, 5EN, 5CH, 5IN, 5AG, 5LK
 * Combat skill: 100
 * Attack damage (fists): 33
 * Attack damage (fire hydrant): 100

Appearances
The Behemoth appears only in Fallout 3. A robot also named Behemoth can be found in Fallout Tactics.

Actual Size
When initially designed Behemoths may have been smaller, about half the size they are now. The skulls, car doors and fire hydrants they carry are all bigger than any skull, car door or fire hydrant in the Capital Wasteland. This is evidence that the Behemoth's size could have been increased after creation. If you spawn a Behemoth, they are not the size encountered in-game. Rather, they are only slightly taller than Fawkes.

Additionally, the 5 Behemoths seem to vary in size; the GNR Plaza and Evergreen Mills Behemoths stand more than 20 feet tall, whereas The Capitol Building and Jury Street Metro Behemoths only seem to be about 12 to 15 feet tall (a little over twice as tall as a standard human character.) This would support the theory that they get larger as they grow older.

Physical Appearance and Equipment
Behemoths are roughly 20 foot tall Super Mutants, standing approximately three times as tall as a normal human. Some Behemoths carry fire hydrants that they use as melee weapons. They also wield car doors, which are used as shields. They have shopping carts on their backs as sort of backpacks, for carrying their victims with them like food rations.

Strategies

 * Behemoths are usually supported by normal Super Mutants. Give the guards priority, but keep moving to avoid being hit by the Behemoth. The Behemoth that appears at the GNR station, however, appears to have invoked hostility from all nearby Super Mutants, so it might be better to shoot these Super Mutants later.


 * Due to their large size, it is relatively easy to achieve headshots in VATS. If the player has sufficient first-person shooter experience, it is also not too difficult to achieve head shots without VATS, assuming the gun that the player is using does not have significant spread. Behemoths also cannot enter hallways or get under low hanging rubble and have difficulty getting around any large obstruction. Players can use terrain to their advantage to keep themselves out of melee range while gradually taking the Behemoth down at a safe distance. This tactic is extremely useful against the Behemoth in The Capitol Building.


 * An all purpose strategy for any ranged player is the Dart Gun which will cripple the Behemoth's legs with a single shot regardless of the player's Small Guns skill. With the Behemoth's mobility reduced practically any ranged weapon can be used to finish it off. A crippled Behemoth can still deal massive damage if allowed to get into melee range, so it is best to still keep your distance.


 * Big Guns are arguably the most straightforward method to deal with Behemoths. Any inaccuracy they may suffer from will not be an issue considering the sheer size of these monsters. The Fat Man, Minigun, Gatling Laser, and even the Missile Launcher are an effective means to deal a fair amount of damage to the Behemoths.


 * Small Guns can be ineffective unless aimed at the Behemoth's head. However Sniper Rifles can be useful in attempting to damage them from a distance.


 * The Alien Blaster and Firelance are particularly useful against Behemoths. With the quick rate of fire, high damage, and extremely high Critical Chance a skilled Energy Weapons character can take one down before it can get close enough to do any damage.


 * Explosives are also an effective way to damage the Super Mutant Behemoth. Mines in particular, if layed down in the creatures path, will offer good extra damage.


 * An Unarmed specialist will find the behemoth very hard to deal with, however more experienced players, with perks such as Paralyzing Palm and Iron Fist will be better off.


 * Because of his rather low Health, close-ranged attacks, and the fact that he becomes the priority target for enemies instead of you, Dogmeat is best kept out of Behemoth fights. If not kept at a safe distance, he will rush the monster, and will most likely be killed in a few hits. Dogmeat may also get in the way of the player and actually be damaged by the player.


 * Weapons that fire several "shots" at the same time, such as Combat Shotguns (and The Terrible Shotgun), Metal Blaster (from The Pitt), and the Tri-Beam Laser Rifle (from Broken Steel) are one of the most effective weapons for sneak attacks (when done outside of V.A.T.S.). This is because outside of V.A.T.S., each shot's critical damage is calculated individually. This aspect makes these weapons (especially The Terrible Shotgun, which deals huge damage and fires 9 pellets) incredibly effective in sneak attacks (and regular critical hits). With the right addition of perks, such as Better Criticals and Finesse, these weapons will deal massive damage.


 * Weapons with knockdown abilities, such as the Scoped Gauss Rifle, and the Victory Rifle can be very useful in dealing with these creatures. Knocking down Behemoths will buy the player more time to deal damage and even save allies in danger.

GNR

 * The Behemoth right outside the entrance to the GNR Building is the easiest to find and is actually impossible to miss if you attempt Galaxy News Radio (quest). You will have ten Brotherhood of Steel members to back you up, though they are not invincible and and some may already be dead or die in the process. On a nearby fountain in the square, you will also find a dead BoS member slumped on the fountain's rails in an almost picturesque position. The soldier will be in possession of a Fat Man and some Mini Nukes, which will be invaluable in bringing down the monster.  However, keep in mind that the dead soldier will not be there if Sentinel Lyons isn't present in the battle.

Evergreen Mills

 * In Evergreen Mills, the Raider-controlled train yard, a Behemoth has somehow been captured and inprisoned by an electric fence. However the fence's power source is simply a nearby generator. When approaching the area from the south, the generator can be easily destroyed with any rifle (it should be noted that there is a switch to turn off the electric fence right next the the generator as well). Once the electric gate is turned off, the Mutant will rush outside and attack the Raiders, killing most, if not all of them (most of whom are armed with nothing but 10mm Pistols). Because of gate that traps this monster, the raiders that occupy the train yard, and the cliffs that surround the area, the number of methods to deal with the Behemoths are almost endless.

Capitol Building
One of the Talon mercs has a fatman that may prove useful
 * A Behemoth can be found in The Capitol Building fighting Talon Company mercenaries at the west entrance. There is a considerable amount of fighting between Super Mutants and Talon Company so it's possible to sit back and watch the fun. You can also find a room next to the dome with the Behemoth containing a computer which, when hacked, will allow you to activate the turret system in the dome. There are several turrets that are activated by this command, so it'll likely make things much more interesting.

Takoma Park

 * A Behemoth and several Super Mutants are located northeast of the Takoma Park in Takoma Industrial. There is a truck near a water tower a few feet away. On the truck you can see a dead mercenary and a switch that activates some artillery that makes the fight much easier. This artillery will fire several times before breaking (you can fix it with a Science skill of 33).

Jury Street Metro Station

 * This Behemoth is located at a Super Mutant camp, after following a series of search party notes (Unmarked quest: Searching for Cheryl). The final note takes you to a camp between the Jury Street Metro Station and Evergreen Mills. Both are located due west of Vault 101. You do not need to get these notes to make this Behemoth appear. Keep going west from Vault 101 until you find Jury Street Metro Station. Head further west from there until you find a bunch of wrecked train cars along with a few Super Mutants. If you're having trouble finding it follow the tracks heading NE from Evergreen Mills, or you can just look for the train tracks SW of Jury Street Metro (hint: they come out of a tunnel in the hill). On these tracks are several overturned railway carts. One of them is a large empty storage container, with the open part facing the Jury Street Metro area. In this container are several "Cart Cages" (shopping carts pushed together to make a cage). One of these contains a teddy. Open the cart and grab the teddy. While not the only way to make the Behemoth spawn taking the teddy bear will spawn him above the tunnel. When he spawns, the Behemoth may get caught up fighting Talon Company/Regulators (depending on your Karma) near the Jury Street Station.
 * Note: Like all the other super mutants you encounter, there is a way of being able to attack from range without being in danger of being hurt. Near a red boxcar there is a pile of rubble in which you could jump on to (with a bit of glitching) get onto the boxcar. The delay time of the behemoth spawn gives you enough time to grab the teddy and run.

Trivia

 * Scoring a critical hit with a plasma, alien, or laser weapon on a behemoth reduces them to a normal-sized plasma puddle or ash pile, respectively, much smaller than one would expect for something so big.
 * Behemoth means "a huge or monstrous creature."
 * Instead of the Behemoth's head coming off, the top comes of instead,revealing the Behemoth's brain
 * Unlike their super mutant bretheren, behemoth's cannot talk, and at most, only grunt when dealing or taking damage.
 * Behemoths cannot be completely dismembered; only the arms, legs, and skull cap fall off.
 * For PC Users not above cheating, the easiest way to get the achievement "The Bigger They Are..." is to use the console to kill and resurrect a single Behemoth five times consecutively.

Bugs

 * Super Mutant Behemoths do not drop Super Mutant Blood Samples

YouTube Videos
Video locations of all Super Mutant Behemoths 1mFXlMNH2BM&fmt

Specific Location Videos

 * Behemoth at GNR (in HD): http://www.youtube.com/watch?v=rTZVrHEneG4
 * Behemoth at Evergreen Mills (in HD): http://www.youtube.com/watch?v=TbW4VJajdmE
 * Behemoth at Capitol Building (in HD): http://www.youtube.com/watch?v=TayUq2hadiI
 * Behemoth at Takoma Park (in HD): http://www.youtube.com/watch?v=8WrjFAgC6Lc
 * Behemoth at Jury Street Metro Station (in HD): http://www.youtube.com/watch?v=Lye4wOg6F8s