Suggestions by @nitrogencake

Austin Butler

as Flash Gordon in Flash Gordon

Score: +4

Katey Sagal

as Rachel Rozman in The Fantastic Four: First Steps (1990)

Score: +3

Dustin Hoffman

as Victor Von Doom in The Fantastic Four: First Steps (1990)

Score: +2

Donald Sutherland

as Red Ghost in The Fantastic Four: First Steps (2005)

Score: +4

Ben Burtt

as H.E.R.B.I.E. in The Fantastic Four: First Steps (2005)

Score: +3

Siobhan Fallon Hogan

as Rachel Rozman in The Fantastic Four: First Steps (2005)

Score: +4

Pete Postlethwaite

as Galactus in The Fantastic Four: First Steps (2005)

Score: +3

Paul Giamatti

as Harvey Elder in The Fantastic Four: First Steps (2005)

Score: +3

Diane Kruger

as Shalla-Bal in The Fantastic Four: First Steps (2005)

Score: +4

Brad Garrett

as Ben Grimm in The Fantastic Four: First Steps (2005)

Score: +4

Hugh Dancy

as Johnny Storm in The Fantastic Four: First Steps (2005)

Score: +3

Rachel Weisz

as Sue Storm in The Fantastic Four: First Steps (2005)

Score: +5

Antonio Banderas

as Reed Richards in The Fantastic Four: First Steps (2005)

Score: +6

Sala Baker

as Dek in Predator: Badlands (2005)

Score: +4

Michelle Williams

as Thia in Predator: Badlands (2005)

Score: +3