Radscorpion ( Fallout 3 ) Radscorpions are creatures found in the Capital Wasteland in 2277 . Background . Radscorpions are mutated from the , which were common in many pet stores at the time of the Great War . Contrary to many expectations , their venom grew much more potent and deadly when they mutated rather than becoming diluted . Though considered nocturnal and sensitive to light , radscorpions can be found active during the daytime in the areas they inhabit . Apart from their size , they appear visually identical to regular scorpions , with thick , mottled , dark , blueish gray carapaces . Their poison gland is used in crafting the dart gun . Characteristics . Biology . Radscorpions are not only armed with two powerful claws , but also have a nasty venomous sting that can kill victims if not treated quickly . Since they are indigenous to desert environments , they do not mind brightly - lit environments and will attack anyone in broad daylight as well as at night . Radscorpions can be seen burrowing into the ground from time to time , much like their pre - War cousins . These burrows are likely where they sleep and take refuge from the harsh conditions of the external environment like the intense heat and sandstorms . Gameplay attributes . Radscorpions will usually attack head - on and then attempt to flank the prey . Unlike other creatures , radscorpions lack a " weak point " that can be targeted for extra damage ( such as a " head " for a headshot ) , which makes V . A . T . S . combat and firearms somewhat less effective against them . Radscorpions also take significantly reduced damage from any shots that hit their legs , such that even a critical hit from a high - powered weapon will only do minor damage . While close - by or indoor , radscorpions will make a distinct " walking sound " that gives their presence away , though it may happen that a radscorpion stays idle until it notices the target . Radscorpions can often send poorly prepared travelers running for the hills , since they can be difficult to get rid of without getting serious injuries or casualties . All radscorpions are affected by the Entomologist perk . Variants . Radscorpion . The most common variety of radscorpion . These venomous predators seem to possess different speeds , some taking their time and others bolting at top speed . Their size ranges from that of a large dog to small livestock . Giant radscorpion . A much larger radscorpion with a much more potent venom . These terrifying creatures can reach incredible sizes , ranging from livestock to a Corvega . The giant radscorpion is commonly encountered usually in the west and far south of the Capital Wasteland . It is not uncommon to see one turn from the target and back off , only to be joined by another and charge in again . In fact , they seem to operate in pairs most often , only preferring to attack alone when their partner is dead . Albino radscorpion ( Broken Steel ) . Albino radscorpions are about the same size as a giant radscorpion , but instead of having a dark bluish - gray appearance , they are pale white with pink joints and eyes . They deal out a very large amount of damage while taking very little themselves , while their stingers contain an extremely potent venom . They are exceptionally tough , and have significantly more hit points than almost any other creature or non - player character in the game , surpassed only by a super mutant behemoth and General Jingwei . A unique trait about these radscorpions is the fact that they slowly regenerate health when exposed to direct sunlight , similar to the effect of the Solar Powered perk to the Lone Wanderer . Like regular radscorpions , they have no weak point , but their legs can be crippled to undermine their mobility . An albino radscorpion can be found anywhere near a giant radscorpion spawn , and they can be encountered in pairs or appear after fast travel . Well prepared and high level travelers may actually encounter more albino radscorpions than regular radscorpions . As evident by their statistics , albino radscorpions are one of the toughest creatures to be fought in the Wasteland . Appearances . Radscorpions appear in " Fallout 3 " and its add - on " Broken Steel " .