Fallout Season 2 Introduces F.E.V. With Episode 5 On‑Screen Reveal

Overview

• Episode 5 features the series’ first explicit on‑screen reference to the Forced Evolutionary Virus.
• Text on a Vault‑Tec terminal defines F.E.V. as a gene‑altering agent for organism supercharging.
• The file appears during a search at the old Vault‑Tec headquarters, though the glimpse is brief and incomplete.
• In franchise lore, West Tek created F.E.V. before the Great War, later weaponized by figures like the Master and groups such as the Enclave.
• The show frames F.E.V. as part of Vault‑Tec’s “Phase 2,” signaling future significance, with any appearance of super mutants remaining speculative.