Sentry Bot (Fallout 3)

The Sentry Bot (military serial numbers SB-XXXX) is a military robot model made before the Great War. A different Sentry Bot model was used in military bases in California, while this one has been seen mainly in the Capital Wasteland. They have two arms that end with deadly weapons (a Minigun or Gatling Laser on the right arm, and a Missile Launcher on the left arm), and tripod legs with wheels.

They are programmed with an authoritative, professional military personality, in contrast to the "gung-ho" personality of the Mr. Gutsy model.

Sentry Bots are the highest level robot NPCs in Fallout 3, and are much more powerful opponents than Protectrons, Robobrains, and Mr. Gutsys.

Statistics
Sentry Bots are extremely durable and take significant amounts of small arms or energy weapons fire, or even multiple missile shots, to destroy. They have the same very high amount of health as a Deathclaw. Additionally, unlike Deathclaws, they do not have a "weak point" that can be targeted for extra damage. They do not take additional damage from headshots, and in fact take reduced damage from shots to the head or legs compared to shots to the torso or arms. Pulse Grenades, however, can usually destroy them in a single blast. Like all other robots, it has a Combat inhibitor body part that will send it into a frenzy if crippled, which would serve to dispatch other foes when it brings its firepower to bear and also to weaken it.

Appearances
This sentry bot model appears only in Fallout 3. A similar robot appears in Fallout 2 also armed with minigun and missiles, however with different design.

Quotes
Sentry Bots possess an authoritative array of speech programming, mainly expressing its current programming out loud, much like the Protectron. However, Sentry Bots have a "deeper" voice, instilling fear in all.


 * "Threat analysis: Yellow. Searching for hostile targets." —When searching for a target
 * "Threat analysis: Yellow. Scanning for hostile targets." —When searching for a target
 * "No hostiles detected. Continuing perimeter sweep." —When searching for a target
 * "Warning. Non-combatants are advised to leave the area. Security sweep in progress." —When searching for a target
 * "Threat analysis: Green. Resuming standard patrol pattern." —When giving up search for a target
 * "Be advised. Security sweep in progress. Lethal force may be used without warning." —When searching for a target
 * "Threat analysis: Green Security operation: Successful. Resuming normal operation." -When giving up search for a target, or when target is neutralized
 * "Threat level: Red". —When engaging a target
 * "Weapons free." —When engaging a target
 * "Engaging hostile target." —When engaging a target
 * "Hostile detected. Beginning neutralization." —When engaging a target
 * "Locking on... Firing." —When engaging a target
 * "Target weapons lock: Green." Re-engaging hostile target." —When engaging a target
 * "Non-combatants are advised to stand clear of weapons discharge." —When engaging a target
 * "Weapons status: Engaged." —When engaging a target
 * "Be advised. Hostiles in area. Neutralization in progress." —When engaging a target
 * "Alert. Hostile detected. Lethal force authorized for all units." —When engaging a target
 * "Alert. Security operation in progress. Stand clear of security perimeter." —When engaging a target
 * "Hostile detected. Non-combatant safety can no longer be guaranteed." —When engaging a target
 * "Threat assessment: Target heavily damaged. Continuing firing pattern." —When engaging a damaged target
 * "Threat assessment: Yellow. Primary functions significantly damaged. Continuing security sweep." —When searching for a target while damaged
 * "Systems faillurrr--" —When deactivated
 * "Primary systems offlinn--" —When deactivated; it is interesting to note that when the Sentry says "primary", it's voice is higher than normal
 * "Warning, warnnn--" —When deactivated
 * "Have a nice day." —When greeting player or NPC the bot is not hostile towards.
 * Do not interfere with security operations! —When spoken to.