Suggestions by @burtonesque

Colin Farrell

as Clayface in Batman's supporting cast

Score: +1

Rebecca Ferguson

as Poison Ivy in Batman's supporting cast

Score: +1

Nick Offerman

as Bullock in Batman's supporting cast

Score: +1

Daniel Kaluuya

as Harvey Dent/Two-Face in Batman's supporting cast

Score: +1

Will Forte

as The Mad Hatter in Batman's supporting cast

Score: +1

Ralph Ineson

as Mr. Freeze in Batman's supporting cast

Score: +2

Paul Dano

as Jonathan Crane/The Scarecrow in Batman's supporting cast

Score: 0

David Thewlis

as Alfred in Batman's supporting cast

Score: +1

Frances McDormand

as Leslie Thompkins in Batman's supporting cast

Score: +1

Vicky Krieps

as Poison Ivy in Batman's supporting cast

Score: +1

Jared Harris

as Hugo Strange in Batman's supporting cast

Score: +1

Brendan Gleeson

as Alfred in Batman's supporting cast

Score: +1

Toby Jones

as Oswald Cobblepot/The Penguin in Batman's supporting cast

Score: 0

Rebecca Ferguson

as Poison Ivy in Batman's supporting cast

Score: +1

Vicky Krieps

as Poison Ivy in Batman's supporting cast

Score: +1

Vicky Krieps

as Poison Ivy in Batman's supporting cast

Score: +1

Rebecca Ferguson

as Poison Ivy in Batman's supporting cast

Score: +1

Robert Pattinson

as Bruce Wayne/Batman in Batman's supporting cast

Score: +1

Disasterpeace

as Composer in Batman's supporting cast

Score: +1

Matt Reeves

as Director in Batman's supporting cast

Score: +1