They are 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 characterEdit
|This character is involved in quests.|
- A-2018 will only appear during the Brotherhood of Steel, Minutemen, or Railroad endings.
- A-2018 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.
- A-2018 will often use a triple-barreled missile launcher, allowing them to rapidly fire high-damaging missiles at long range with deadly accuracy, making them a very deadly opponent to fight against.
A-2018 appears only in Fallout 4.