Suggestions by @defenestration

Timothée Chalamet

as Regulus Black in The DEFINITIVE Marauders Fancast

Score: +1

Sofia Bryant

as Mary McDonald in The DEFINITIVE Marauders Fancast

Score: +1

Sophie Thatcher

as Marlene McKinnon in The DEFINITIVE Marauders Fancast

Score: +2

Finn Wolfhard

as Severus Snape in The DEFINITIVE Marauders Fancast

Score: +1

Faith Collins

as Lily Evans in The DEFINITIVE Marauders Fancast

Score: +1

Lewis Capaldi

as Peter Pettigrew in The DEFINITIVE Marauders Fancast

Score: +2

Jeff Ward

as Remus Lupin in The DEFINITIVE Marauders Fancast

Score: +1

Louis Seriot

as Sirius Black in The DEFINITIVE Marauders Fancast

Score: +2

Xolo Maridueña

as James Potter in The DEFINITIVE Marauders Fancast

Score: +3

Isis Hainsworth

as Nina Blount in Vile Bodies

Score: +1

Charlie Heaton

as Adam Fenwick Symes in Vile Bodies

Score: -1

Donald Sutherland

as Colonel Blount in Vile Bodies

Score: +1

Chanse McCrary

as James Potter in The Marauders

Score: -39

Tyler Cohenour

as Sirius Black in The Marauders

Score: -18

Earl Cave

as Sirius Black in The Marauders

Score: -40

Dua Saleh

as Marko in The Lost Boys (1987)

Score: +1

Jason Patric

as Maxwell Lawrence in The Lost Boys (1987)

Score: +1

Tristan Lake Leabu

as Michael Emerson in The Lost Boys (1987)

Score: +1

Finn Wolfhard

as Edgar Frog in The Lost Boys (1987)

Score: +1

Isis Hainsworth

as Star in The Lost Boys (1987)

Score: +1