Sentinel Power Armor

The Sentinel Control System, also known as sentinel power armor or sentinels, are a type of robot encountered in the Commonwealth in 2287.

Background
The Sentinel Control System was developed in cooperation by West Tek and General Atomics International prior to the Great War. It was meant to provide support to military support to Army units by using pre-existing power armor pieces. After the Great War, a number of units were recovered by the Brotherhood of Steel. Some of these units were used by the Brotherhood Outcasts during the Brotherhood Civil War, but were inherited by the East Coast chapter when the Outcasts merged with them after the war.

In 2287, the Brotherhood brought at least four units with them to the Commonwealth, still bearing the paint of the Outcasts. One of these units was used in testing to see if sentinels can be used for unmanned missions, being given more advanced friend/foe identification software. However, the unit was extremely hostile to others and went rogue on its first test patrol. Three other units were sent to escort Knight Maria Harper and Scribes Dawson and Vasquez. However, Dawson hacked into Maria and Vasquez's units and had all three ambush the two soldiers.

Characteristics
Sentinels appear as ordinary power armor frames and are able to equip any pieces of power armor. The majority of sentinel power armors are hostile and will attack on sight. The sole exception is Dawson's suit, which the Sole Survivor can hack into with the Pip-Boy 3000 Mark IV, after killing him and acquiring his passcode. While plugged into the sentinel, it is possible to modify its loadout, switch between standby and escort mode, or change its personality matrix between that of a sentry bot, Mister Gutsy, Assaultron, or "memory free" mode. The sentinel does not take up a companion slot while following the player character.

Locations

 * Two hostile sentinels are standing at an intersection, guarding the bodies of Maria and Vasquez, west of Lexington.
 * An inactive unit is at the Schoelt propane station. It can be hacked into and made a companion following the death of Dawson.
 * After the completion of Malevolent Malfunction, a hostile, rogue unit can be found and killed.

Appearances
The sentinel power armor appears only in the Fallout 4 creation Sentinel Control System Companion.