The Vault - Fallout Wiki

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The Vault - Fallout Wiki
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For other characters in the Fallout universe named Billy, see Billy.
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Biography and appearance
LocationPitt Steelyard
FamilyJohn-John - Brother
Base IDxx00b163Ref IDxx00b164
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It's me, your brother John-John! You remember me... don't you Billy...?

Billy (simply called "trog" ingame) is a trog living in The Pitts Steelyard in 2277.


Billy is encountered the first time you enter the steelyard. Should the player chose not to kill him on their first encounter, Billy is never seen again (unless on subsequent visits the player chooses to assume that one of the many generic trogs in the steelyard is Billy.)

His brother John-John can be seen talking to him, trying to tap any human reason still left in Billy. It is soon revealed that Billy, however, has lost all of his ability to reason, and soon the one-sided conversation deteriorates with John-John running to a locked gate screaming for help. At this point, Billy attacks John-John. John-John will not fight back, and should the player not intervene, Billy will kill him. He will then end his scripted events and, like any other trog, attack the player.

Should the player make a successful sneak attack on Billy, but fail to kill him, he may immediately attack and kill John-John before seeking out the player. Should the player kill Billy and save his brother, John-John will walk over to Billy's corpse and cry. He offers no thanks or dialog options; when conversation is attempted, he only pouts a pitiful "Billy..." and continues to sob.

Interactions with the player character

Interactions overview

This character has no special interactions.


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Carried items
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Drops on death
No additional items


  • Reports of how trogs lose the mental capacity to reason, even with loved ones, is mentioned in Sandra's trog research entry on her research terminal.


Billy appears only in the Fallout 3 add-on The Pitt.