Suggestions by @brendancrowley

Jeremy Irons

as Alfred Pennyworth in Batman: Through The Looking Glass

Score: +1

Elle Fanning

as Celia Smalls in Batman: Through The Looking Glass

Score: +1

Logan Lerman

as Robin in Batman: Through The Looking Glass

Score: +1

Guillermo del Toro

as Director in Batman: Through The Looking Glass

Score: +1

Christian Bale

as Batman in Batman: Through The Looking Glass

Score: +1

Jackie Gleason

as Sal Maroni in Uncasted Batman Characters for the Adam West Series

Score: +2

Ted Cassidy

as Solomon Grundy in Batman '66 Villains

Score: +3

Lyle Waggoner

as Two-Face in Batman '66 Villains

Score: 0

Jeff Goldblum

as Man-Bat in Michael Keaton's Batman villains

Score: +1

Brad Dourif

as Scarecrow in Michael Keaton's Batman villains

Score: +2

Steve Buscemi

as Killer Moth in Michael Keaton's Batman villains

Score: +2

Andrew Bryniarski

as Blight in Michael Keaton's Batman villains

Score: +1

Lori Petty

as Harley Quinn in Michael Keaton's Batman villains

Score: +4

Elizabeth Taylor

as Catwoman in Batman: The Case of the Purr-loined Pearl (1969)

Score: 0

Sidney Lumet

as Director in Batman: The Case of the Purr-loined Pearl (1969)

Score: +1

Morgan Fairchild

as Sarah Essen in Batman: Faces of Death (1992)

Score: +1

Dennis Farina

as Commissioner Gordon in Batman: Faces of Death (1992)

Score: +2

Doug Jones

as Howard Rambeau in Batman: Faces of Death (1992)

Score: +1

Ossie Davis

as Lucius Fox in Batman: Faces of Death (1992)

Score: +3

Fred Savage

as Robin in Batman: Faces of Death (1992)

Score: +2