Vault 77

Vault 77 is one of the Vault series of fallout shelters developed by Vault-Tec. It was featured in a promotional, crossover comic strip entitled One Man, and a Crate of Puppets, released to promote Fallout 3. For a summary of the comic's characters and storyline, see the above article.

History
A Vault 77 jumpsuit can be found in Paradise Falls in Fallout 3, alongside an audio recording of an obviously worried slaver, saying how it scares the others and it should be burnt, and that "he" may be back for it. The slavers obviously fear "him", hinting that it may belong to the Vault dweller who killed the slavers who captured him. The jumpsuit appropriately boosts one's melee and unarmed skills (given that these were the Puppet Man's ways of murdering).

Appearances
Vault 77 appears only in the official Fallout webcomic One Man, and a Crate of Puppets. Vault 77 is mentioned in Fallout 3 where a Jumpsuit can be found including a holotape.