Suggestions by @nathanialprice

Sophie Rundle

as Marlenne Mckinnon in The Marauders Era

Score: +1

George MacKay

as Remus Lupin in The Marauders Era

Score: -1

Sophie Rundle

as Marlene McKinnon in James Potter and the Marauders’ Map

Score: +3

Kaya Scodelario

as Andromeda Black in James Potter and the Marauders’ Map

Score: +1

Ellie Bamber

as Narcissa Black in James Potter and the Marauders’ Map

Score: +3

Harry Lloyd

as Lucius Malfoy in James Potter and the Marauders’ Map

Score: +4

Bill Skarsgård

as Voldemort in James Potter and the Marauders’ Map

Score: +2

Fionn Whitehead

as Severus Snape in James Potter and the Marauders’ Map

Score: -2

Dean-Charles Chapman

as Peter Pettigrew in James Potter and the Marauders’ Map

Score: +1

Dev Patel

as James Potter in James Potter and the Marauders’ Map

Score: -4

George MacKay

as Remus Lupin in James Potter and the Marauders’ Map

Score: 0

Fionn Whitehead

as Severus Snape in The Marauders

Score: +2

Dean-Charles Chapman

as Peter Pettigrew in The Marauders

Score: +1

Dev Patel

as James Potter in The Marauders

Score: +1

George MacKay

as Remus Lupin in The Marauders

Score: -1

Charlie Heaton

as Barty Crouch Jr. in The Marauders

Score: -4

Bill Skarsgård

as Voldemort in The Marauders

Score: +32

Bill Sage

as Voldemort in The Marauders

Score: -25

Kaya Scodelario

as Andromeda Tonks in The Marauders

Score: +28

Ellie Bamber

as Narcissa Malfoy in The Marauders

Score: -15