Centaurs are the result of combining various kinds of animals and people and infecting them with the Forced Evolutionary Virus. These abominations are horribly disfigured creatures with little intelligence but an affinity for their super mutant masters.
Centaurs are, much like their namesake counterparts from the west, the result of the Forced Evolutionary Virus being used on a combination of humans and a myriad of animals. The centaurs of the East Coast stand almost as tall as an adult human. Their torsos lack arms, and their mouths are filled with three writhing tentacles. Some of its bones are also poking out from its body. Instead of legs, a centaur has multiple human arms that it uses to drag itself along the ground, which confines it to a slow, shuffling form of ambulation.
Centaurs are the constant companions of super mutants and are used as their watchdogs. As a result, they can easily be an indicator of more serious threats lurking nearby. As individuals, centaurs only pose a minor threat. They are durable as opponents and can sustain a rather large amount of damage before succumbing to their wounds. This is offset by their weak melee attacks in the form of their lashing tongues. They telegraph their close combat attacks quite decisively. Centaurs are also capable of ranged attacks which consist of radioactive spit. The spit does not cause significant damage aside from a staggering 5 rads/sec for 15 seconds. They are entirely silent creatures, lacking the ability to produce sounds of any kind, allowing them to sneak up on unwary targets.
The basic centaur variant in Fallout 3. They are slow-moving and often travel with a super mutant. Centaurs have both a long range and a close range attack. Centaurs are not major threats, however, they may cause trouble for anyone unprepared.
The following is based on Fallout 3 cut content and has not been confirmed by canon sources.
Clancy was a named centaur cut from the final release of the game. Although identical to normal centaurs stat-wise, Clancy's internal name associates him with the quest Wasteland Survival Guide. Although they cannot be found anywhere in the game, Clancy can be found in the game files. Their reference id is 0002d3be.
Centaurs are mostly found accompanying super mutants or may be found in a group without their masters. Only rarely are they found alone.
The largest group of centaurs can be found in the basement of the Chryslus Building, where they accompany several super mutants. Another significant group is located just below the Seward Square skybridge, near the Preacher.
Based on concept art, it seems at one point there was to be an "intelligent" centaur.
Centaurs lack the dog head alongside the human one like the centaurs from the first two Fallout games. This may be due to the different experiments with the Forced Evolutionary Virus that happened on the east and west coasts.
Despite having no visible eyes or ears, they have a high level of Perception, giving them great awareness of their surroundings.
Centaurs appear to have teeth growing out of their chests, though they do not use them as weapons.
In Moira Brown's terminal entries, she suggests that centaurs can talk due to the abundance of their tongues. In-game, centaurs are mostly silent.
Most centaurs drop no items, but they can drop bottle caps and Rad-X.
A twin centaur was a planned variant of the centaur but was cut from the game.