Prime universe
(Capcom's primary storyline)

Regason Base was a military base in the US. Former Marine Lieutenant Billy Coen was to be sent to this base for his execution.[1]

Further notes

The English dub for Resident Evil 0 mistakenly refers to the base as "Ragathon". This is because the sound "su" can replace "f" sounds in Katakana. Mark Reichwein's localization for Resident Evil 0 HD gives it as "Regarthon".


  1. Resident Evil 0 (2002), scene: "Opening".