CFW is an acronym for Criminal of the Free World. It is a name given to the Deity of Sin, Arfoire who had existed in Gamindustri since ancient times. CFW Arfoire had once tried to terminate all of Gamindustri with her tremendous power. However, Arfoire and her dark ambitions were sealed away by four former CPUs of Gamindustri.
- CFW in real life stands for "Custom Firmware" which is a customized operating system installed on a machine utilized to install unlicensed software or add features not already present on the machine. It usually ends up being used to install illegal or illegally obtained software, hence it being associated with villains in the Neptunia series.