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A unique case amongst the serum trials, initial subjects expired within seconds, exhibiting major trauma to the body on scale previously unknown.

It was only after reviewing slowed-down footage of the initial tests that the team realized test subjects were essentially shredding their own bodies when attempting to move, the incident happening so fast as to be nearly indiscernible to the naked eye.

Highly diluted solutions were used for subsequent tests, with doses increased slightly until physical limitations were reached.
The Whitespring bunker terminal entries

Speed Demon is a mutation in Fallout 76.

Overview[]

Positive effects
+20% movement speed and +30% reload speed.
Negative effects
Increased Hunger and Thirst accumulation by 50% while moving.

Notes[]

Having this mutation provides the highest possible movement speed bonus, making all other movement speed modifiers redundant. This includes the Squad Maneuvers perk, Sleek armor leg mods, the Fixer and legendary weapon modifiers that provide bonus movement speed when aiming.

Bugs[]

  • PCPC Playstation 4Playstation 4 Xbox OneXbox One The Class Freak perk has no effect on the downside of this mutation.[verified]
  • [Platforms needed] The mutation does not work on weapon reload speeds after entering/exiting a power armor or when the player logs in to a new server/world. As a workaround, the player must switch weapons for the mutation to take effect.[verification needed]
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