Suggestions by @hdb2002

Ross Kemp

as Ash in Alien (1979) but it's EastEnders

Score: +1

Gillian Taylforth

as Dallas in Alien (1979) but it's EastEnders

Score: +1

Adam Woodyatt

as Kane in Alien (1979) but it's EastEnders

Score: +1

Letitia Dean

as Lambert in Alien (1979) but it's EastEnders

Score: +1

Susan Tully

as Ripley in Alien (1979) but it's EastEnders

Score: 0

Steve McFadden

as Brett in Alien (1979) but it's EastEnders

Score: +1

Todd Carty

as Parker in Alien (1979) but it's EastEnders

Score: +1

Paul Robeson

as Parker in Alien (1979) but it was made in the early 1950s

Score: +1

James Mason

as Ash in Alien (1979) but it was made in the early 1950s

Score: +3

Laurence Olivier

as Kane in Alien (1979) but it was made in the early 1950s

Score: +2

Spencer Tracy

as Brett in Alien (1979) but it was made in the early 1950s

Score: +2

Janet Leigh

as Lambert in Alien (1979) but it was made in the early 1950s

Score: +3

Jane Russell

as Ripley in Alien (1979) but it was made in the early 1950s

Score: +2

Kirk Douglas

as Dallas in Alien (1979) but it was made in the early 1950s

Score: +3

Scatman Crothers

as Draba in Spartacus (1960)

Score: +2

Woody Strode

as Draba in Spartacus (1960)

Score: +2

Dana Andrews

as Marcellus in Spartacus (1960)

Score: +1

Ronald Reagan

as Marcellus in Spartacus (1960)

Score: +1

Peter Sellers

as Tigranes Levantus in Spartacus (1960)

Score: +3

Herbert Lom

as Tigranes Levantus in Spartacus (1960)

Score: +1