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Fallout Wiki

A-2018 is a synth living in the Institute in 2287.


A-2018 is a hostile synth encountered in the Institute's reactor room during the quest the Nuclear Option with any faction. A-2018, along with XPN-20A and Z4K-97B, will serve as the game's final boss during all endings other than the Institute ending.

Interactions with the player character[]

Interactions overview[]

FO76 ui icon quest
This character is involved in quests.


Apparel Weapon Other items On death
Synth uniform Missile launcher Reactor terminal password


  • It will only appear during the Brotherhood of Steel, Minutemen, or Railroad endings and will always be hostile to the player character.
  • A-2018, along with XPN-20A and Z4K-97B are the only known synths to have more than four characters in their names.
  • The synth will often use a triple-barreled missile launcher, which fires high-damage missiles at long range in rapid succession.


A-2018 appears only in Fallout 4 and Fallout: Wasteland Warfare.


Institute flag
Fo4 Institute Seal