First Citizen is the title held by the governors of Vault City, after they've left Vault 8 and abandoned the title of Overseers. It is unclear what their prerogatives are, but they are head of the state, deal with Vault City's foreign policies, and revoke citizenships with gusto.
- In 2241, Joanne Lynette is the First Citizen of Vault City.
- After the destruction of the Enclave, Senior Council Member McClure was appointed First Citizen.
- Ancient Roman Emperors were referred to as Princeps, or First Citizen.