Ed is a skeleton in a vault suit which lies just outside the Vault 13 doors. He was the first person sent outside the Vault, before the water chip got broken, and was probably killed by mutant rats. Examining the body will produce two lines on the Pip-Boy:
- You see Ed.
- Ed is dead.
- What's the deal with Ed? Zed's Dead, baby, Zed's dead. From Pulp Fiction. That's part of the reference. Ed was twofold: to immediately show the player that the outside world was dangerous, and to tell the player that he wasn't the first choice of someone to send out.
Ed's corpse appears in Fallout and Fallout 2. A corpse is also found in the cell you are held in Mariposa Military Base if you get "caught" by the Super Mutants at Necropolis, after 40 days, which says the same sentences as "Ed" outside Vault 13; You see Ed. Ed is dead.