an Anti-Virus created solely to negate the effects of the Pregenitor virus and ALL other strains of the virus. The C- variant was used solely by Albert Wesker, by adding it in a very small amount to his 'W-Virus' to negate the detrimental affects to his body. Albert used the virus mixture in a reduced ratio to his younger brother, Tony Wesker. The only other known source of the W-Virus and the C-Pregenitor is kept under Epsilon Antarctic HQ.