Suggestions by @greygriscom

Wallace Shawn

as Headmaster in Bone (Animated Series)

Score: +1

Kevin Michael Richardson

as Roque Ja in Bone (Animated Series)

Score: +1

Robert Pattinson

as Smelly in Bone (Animated Series)

Score: -3

Bill Hader

as Ted in Bone (Animated Series)

Score: -1

Ben Schwartz

as Fone Bone in Bone (Animated Series)

Score: +1

Clancy Brown

as Lucius Down in Bone (Animated Series)

Score: +1

Josh Brolin

as Headmaster (Old Mans Cave) in Bone (Animated Series)

Score: 0

Ralph Ineson

as Lord of the Locusts in Bone (Animated Series)

Score: +2

Willem Dafoe

as Lord of the Locusts in Bone (Animated Series)

Score: +5

Sam Elliott

as The Great Red Dragon in Bone (Animated Series)

Score: +6

Keith David

as Roque Ja in Bone (Animated Series)

Score: +1

Mark Hamill

as Kingdok in Bone (Animated Series)

Score: +2

Ashley Johnson

as Thorn Harvestar in Bone (Animated Series)

Score: +3

Keith David

as Balsaad the river dragon in Bone

Score: +3

Martin Jarvis

as The Head Master in Bone

Score: +1

Peter O'Toole

as Veni-Yan-Cari in Bone

Score: +1

Dee Bradley Baker

as The Teacher in Bone

Score: +1

Sean Astin

as Fone Bone in Bone

Score: +1

Jeffery Wright

as Issac in The Last Of Us 2

Score: +2

Matthew Lillard

as Man-Bat in Matt Reeves' The Batman Trilogy

Score: +1