Suggestions by @gnarlorc

Matt Bomer

as Gaelan Bayle in Baldur's Gate Trilogy

Score: +1

Michelle Yeoh

as Ming Xiao in Vampire the Masquerade: Bloodlines

Score: +2

Mark Strong

as Maximillian Strauss in Vampire the Masquerade: Bloodlines

Score: +1

Toby Jones

as Dorian Umbridge in Harriet Potter

Score: +3

Natalie Portman

as Rena Lupin in Harriet Potter

Score: +1

Eva Green

as Siri Black in Harriet Potter

Score: +2

Luke Evans

as Eldoth Kron in Baldur's Gate Trilogy

Score: +1

Joel Edgerton

as Gromnir Il-Khan in Baldur's Gate Trilogy

Score: +1

Helena Bonham Carter

as Sendai in Baldur's Gate Trilogy

Score: +1

Dave Franco

as Khalid in Baldur's Gate Trilogy

Score: +1

Natalie Portman

as Melissan in Baldur's Gate Trilogy

Score: +1

Vin Diesel

as Biff the Understudy in Baldur's Gate Trilogy

Score: +1

Karen Gillan

as Melissan in Baldur's Gate Trilogy

Score: +1

Hugo Weaving

as Fell in Planescape: Torment

Score: +1

Jeremy Irons

as Pharod Wormhair in Planescape: Torment

Score: +1

Christopher Walken

as Dhall in Planescape: Torment

Score: +1

Woody Harrelson

as Balthazar in Baldur's Gate Trilogy

Score: +1

Kurt Russell

as Smiling Jack in Vampire the Masquerade: Bloodlines

Score: +3

Benicio del Toro

as Nines Rodriguez in Vampire the Masquerade: Bloodlines

Score: +2

Margot Robbie

as Therese/Jeanette Voerman in Vampire the Masquerade: Bloodlines

Score: +1