Suggestions by @fancastmarveldc

Luke Goss

as Heatwave in The Flash: Fastest Man Alive

Score: +1

Andrew Lincoln

as Captain Cold in The Flash: Fastest Man Alive

Score: +1

Carlos PenaVega

as Vibe in The Flash: Fastest Man Alive

Score: +1

Holland Roden

as Iris West in The Flash: Fastest Man Alive

Score: +1

Luke Mitchell

as The Flash in The Flash: Fastest Man Alive

Score: +1

Leo Howard

as Red Hood in Batman: The Red Hood

Score: +1

Danny DeVito

as Oswald Cobblepot/ The Penguin in Batman: Arkham

Score: +2

Patton Oswalt

as Oswald Cobblepot/ The Penguin in Batman: Arkham

Score: -2

Alexandra Breckenridge

as Pamela Isley/ Poison Ivy in Batman: Arkham

Score: 0

Ray Liotta

as Perry White in Superman: Hope

Score: +1

Thomas Brodie-Sangster

as Jimmy Olsen in Superman: Hope

Score: +1

Jessica Stroup

as Lois Lane in Superman: Hope

Score: +1

Billy Zane

as Metallo in Superman: Hope

Score: +1

Billy Zane

as Lex Luthor in Superman: Hope

Score: +1

Henry Cavill

as Superman in Superman: Hope

Score: +1

Shameik Moore

as Jefferson Jackson in The Atom: Chronos Chronicles

Score: +1

John Boyega

as Vic Stone in The Atom: Chronos Chronicles

Score: +1

Colin Firth

as Martin Stein in The Atom: Chronos Chronicles

Score: +1

Joe Morton

as Silas Stone in The Atom: Chronos Chronicles

Score: +1

John Cho

as The Atom || in The Atom: Chronos Chronicles

Score: +1