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The Y-17 master trauma harness is the walking corpse of Mr. Harris, animated by a robotic harness in the Big MT in 2281.


The harness was designed at Big MT's Y-17 medical facility with autonomous casualty recovery in mind. The suit tracks the vital functions of the user and, once a certain injury threshold is reached, it takes over the motor functions of the user and walks them to the designated home base. It is a miracle of research, employing intelligent fibers and artificial muscle, rather than the crude hydraulics that dominated military technology back in 2077.

However, due to the prototypical status of these suits, they suffer from several major issues. First, if a home base is not defined, the suits enter an unpredictable wander state. Second, while it is possible to calibrate the upper injury threshold for the override to kick in, the sensors cannot detect if the user is still alive. Third, the suits record all user movements and can effectively "learn" to replicate their shooting and fighting reflexes, but lack any IFF software. All of these issues combined have led to them breaking out of the Big MT's research facilities and wreaking havoc around the crater.

With no defined home base and no ability to detect the death of the users, the suits acted as mobile coffins: soldiers and researchers trapped inside had no ability to shut them down and were forced to suffer a slow, agonizing death. Even after two centuries, the suits, still carrying the bones of their original users, continue to function, scouring the Big MT of undesirables.

The master trauma harness was worn by a Mr. Harris, a researcher at the X-12 research center, having malfunctioned before the war after Harris choked on a buffalo gourd seed. The harness began attacking other employees, who were forced to seek assistance from X-8 researchers and were granted the K9000 cyberdog gun in return. However, while the researchers tried to subdue the berserk harness, the person carrying the K9000 slipped and dropped it. Unarmed, the team had to flee, but not before sealing the X-12 research center with a forcefield. For two centuries, the harness was kept beneath the forcefield, armed with the K9000.[1][2]

Interactions with the player character

Interactions overview

38 Paradigm of Humanity.png
This character has no special interactions.



  • The harness has a very similar appearance to the space suit, but without gloves. Sometimes, it even has a helmet.
  • Despite the lack of gloves, the suit is somehow able to manipulate the hands of its dead occupant and use them to operate weapons. Head shots do extra damage like with most living creatures, but the head is only a dried skull.
  • The Y-17 master trauma harness is one of the two only sources of a K9000 cyberdog gun, the other being the Think Tank.
  • After killing it, the Courier will be ambushed by several standard trauma harnesses carrying advanced weapons like Gatling lasers, Tesla cannons and Gauss rifles.
    • They may discard their current weaponry in favor of the dropped K9000 cyberdog gun by running to it and equipping it for use against the Courier.
  • Crippling a Trauma harnesses' head post-mortem will result in bodily matter to spawn despite the lack of any living matter existing in the character


The Y-17 master trauma harness appears only in the Fallout: New Vegas add-on Old World Blues.

Behind the scenes

With the Wild Wasteland trait, one of the audio logs for the Y-17 master trauma harness is a reference to Doctor Who episodes 'Silence in the Library'/'Forest of the Dead'. In these episodes, the protagonists are chased after by creatures which possess space suits after rapidly consuming the flesh of their inhabitants, leaving only the bones. The last words of the suits' inhabitants loop endlessly. The last audio statement of one such suit from the episode, and a line heard when encountering the trauma harnesses is "Hey, who turned out the lights?"


  • PCPC Xbox 360Xbox 360 They may not respawn after completion of Make up Your Mind or after completion of Old World Blues [verified]
  • Playstation 3Playstation 3 Xbox 360Xbox 360 A head shot on the variation without the glass dome over the skull may still result in graphics of glass shattering from the skull. [verified]
  • PCPC Playstation 3Playstation 3 Xbox 360Xbox 360 The master trauma harness may glitch and cross the forcefield in the X-12 research facility. This allows the player to obtain the K-9000 before being able to remove forcefields. [verified]