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This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.
Gameplay articles
FalloutStealth Boy
Fallout 3Stealth Boy
Fallout: New VegasStealth Boy
Stealth Boy mark II prototype
Fallout 4Stealth Boy
Railroad Stealth Boy
Fallout 76Stealth Boy
Stealth Boy Mark III
Phantom device
Fallout TacticsStealth Boy
Fallout: New CaliforniaStealth Boy
Van BurenStealth Boy
Fallout: BoS 2Stealth Girl
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Stealth Boy is a catch all term for several models of personal stealth device worn on one's wrist or waist. It generates a modulating field that transmits the reflected light from one side of an object to the other, making the bearer almost invisible to the untrained eye.

HistoryEdit

The technology was developed by Robert Mayflower, based on captured Chinese Hei Gui stealth suits, belonging to the Black Ghost counterinsurgency/terror units. Though the Stealth Boy is more portable and capable of projecting a more powerful stealth field, it has severe drawbacks, as listed below.

After the Great War, it was used by the nightkin elite super mutants units of the Master's army.

The Enclave made various improved models at sites across the nation. In Fallout: New Vegas, Doctor Henry is in possession of schematics for the Stealth Boy mark II prototype, a superior version of the RobCo 3001 model. Experimental even before the Great War, he has managed to recreate one hoping to provide insight into the nightkin's problems. A updated version of the satchel model, the Stealth Boy Mark III, was produced by Enclave forces at the Whitespring Bunker in Fallout 76 and can be acquired by the player character after joining the Enclave.

Gametitle-VBThe following is based on Van Buren and has not been confirmed by canon sources.

Some time after they acquired the Stealth Boy technology, the Brotherhood of Steel experimented with those devices. When the side effects were discovered, the devices were banned and the team disbanded. However, it was not known that the team had already begun to suffer the effects of the device. Thinking the disbanding of their team to be a conspiracy, they decided to steal the Stealth Boys and form a new covert operation called the Circle of Steel.

Gametitle-VBEnd of information based on Van Buren.

Side effectsEdit

Prolonged, repeated usage of Stealth Boys have been found to have unpleasant mental side-effects, causing anxiety, paranoia, wild mood swings, and even schizophrenia and dementia. These effects take a long time to manifest in humans (the player can use Stealth Boys without any negative effects), although they appear only after a few uses when used by Nightkin. As Nightkin were originally The Master's elite stealth troops, nearly all of them used Stealth Boys, resulting in all of them suffering from Stealth Boy sickness. Their mental problems vary, but the most common symptom is the development of an imaginary companion or second personality (similar to Dissociative Identity Disorder). Notable Nightkin who suffer from Stealth Boy sickness of this kind are Davison, Tabitha, Lily Bowen, and Dog/God. Stealth Boy usage appears to be addictive to Nightkin, as they go through withdrawal when deprived of Stealth Boys for a long time, becoming more aggressive, short-tempered, and fearful of being seen or stared at by others.

VariantsEdit

RobCo 3001 model Stealth BoyEdit

Stealth Boy

RobCo 3001 model Stealth Boys can be found in Fallout, Fallout 3, Fallout: New Vegas, and it is mentioned in Fallout 2 and its description is present in the files of Fallout Tactics. The 3001 model was developed by RobCo Industries scientist Robert Mayflower for the U.S. military, and when used generates a modulating stealth field around the user for several hours. The downside of this model is its detrimental effect on the users mental health, with heavy users such as the Nightkin and Van Buren's iteration of the Circle of Steel suffering schizophrenia and paranoid delusions because of extended use.

Satchel model Stealth BoyEdit

Fallout4 Stealth Boy

Worn on the waist instead of the wrist, and with a shorter battery life, lasting only 30 seconds. This model is found in the Commonwealth and Appalachia.

Stealth Boy mark II prototypeEdit

Gameplay article: Fallout: New Vegas

This world object is an enhanced Stealth Boy, put through testing by the Enclave during the Great War. It is only seen used by Lily during the quest Guess Who I Saw Today.

Stealth Boy mark IIIEdit

Stealth Boy Mark III
Gameplay article: Fallout 76

A superior version of the satchel model developed by the Appalachia Enclave, lasting for 90 seconds rather than the 30 of the standard satchel model.

Phantom deviceEdit

Phantom device
Gameplay article: Fallout 76

A satchel model Stealth Boy modified by the Order of Mysteries with a cloud of HalluciGen gas that cloaks the user, frenzying nearby enemies.

Railroad Stealth BoyEdit

Gameplay article: Fallout 4

The secretive organization The Railroad gained access to a more powerful variant of the normal Stealth Boy. Their resident engineer Tinker Tom sells the devices to trusted agents.

GalleryEdit

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