Sarge is a Sentry bot character in the Castle tunnels in 2287.


Sarge was used by the Minutemen for a long time to guard their main base of operations, The Castle. In search of weapons, the Sole Survivor heads into the Castle tunnels with Ronnie Shaw to find a way to get into the West Bastion. Sarge is still active and hostile to any intruders, including the Sole Survivor and Ronnie Shaw (due to his IFF database being corrupted). Ronnie Shaw makes note of his demise, saying that it's a shame that they had to destroy him. Sarge is a standard Mk II sentry bot equipped with dual miniguns. Due to the nature of the close quarters, fighting him can be difficult.

Interactions with the player characterEdit

Interactions overviewEdit

General Services Quests
Essential: noIcon cross
Companion: noIcon cross
Perk: noIcon cross
Merchant: noIcon cross
Doctor: noIcon cross
Rents bed/room: noIcon cross
Starts quests: noIcon cross
Involved in quests: yesIcon check
Old Guns


Apparel Weapon Other items On death
.45 round (varies)
5.56 round (varies)
Aluminum (varies)
Biometric scanner
Fuse (3)
Fusion core (2)


  • It's possible that by backing into the previous hallway after waking Sarge, that Sarge will not follow, allowing you to 'peek the corner' to take shots and/or throw grenades before retreating again.
  • If you defeat Sarge before starting Old Guns, Ronnie Shaw will mention that she is surprised Sarge is still down there, as well as the fact that she felt sorry for whoever woke him up.
  • Sarge can corner the player, and will keep on using melee attacks. This can drain health fast, sometimes faster than a stimpak can heal the player (depending on game difficulty settings).
  • If one has upgraded the Robotics Expert skill one can initially prevent Sarge from turning hostile by hacking him before he has deployed fully. However he may tell the Sole Survivor that his Minuteman database is corrupted and will enable his defensive protocol, essentially rendering the hack moot as he will turn hostile. Talking/hacking Sarge after the initial hack can prevent this, allowing you to effectively control Sarge.
    • If hacked to be given friendly commands Ronnie will still fire at Sarge. This will turn it instantly hostile to Ronnie, though not to the Sole Survivor.
  • Even if Sarge has been hacked into a shut down state, or given friendly commands, it is impossible to continue the Old Guns quest with him still alive.


Sarge appears only in Fallout 4.