Suggestions by @meghwar5

Charlize Theron

as Boss in MGS(story private)

Score: +1

Wyatt Russell

as Nakd/Venom Snake in MGS(story private)

Score: +1

Austin Butler

as Raiden in MGS(story private)

Score: -1

Natalie Portman

as Meryl in MGS(story private)

Score: -1

Jason Momoa

as Vamp in MGS(story private)

Score: +1

Ron Perlman

as Solidus Snake in MGS(story private)

Score: +1

Kurt Russell

as Big Boss in MGS(story private)

Score: +1

Steven Yeun

as Otacon in MGS(story private)

Score: +1

Daniel Radcliffe

as Otacon in MGS(story private)

Score: -1

Kieran Culkin

as Otacon in MGS(story private)

Score: -1

Kelsey Grammer

as Lepka in Future Boy Conan(story private)

Score: +1

Ron Perlman

as Lao in Future Boy Conan(story private)

Score: +1

Bruce Campbell

as Captain Dyce in Future Boy Conan(story private)

Score: +1

Frank Grillo

as Liquid snake in MGS(story private)

Score: +1

Dave Bautista

as Raven in MGS(story private)

Score: +1

Ray Park

as Gray Fox/Frank Jaeger in MGS(story private)

Score: +1

Tommy Lee Jones

as Roy Campbell in MGS(story private)

Score: +1

Doug Jones

as Mantis in MGS(story private)

Score: +1

Stephen Lang

as Revolver Ocelot in MGS(story private)

Score: +1

Willem Dafoe

as Revolver Ocelot in MGS(story private)

Score: -1