Suggestions by @riversidersyih

Michael Keaton

as Batman in Justice League 2

Score: +1

Jason Momoa

as Aquaman in Justice League 2

Score: +1

Ray Fisher

as Cyborg in Justice League 2

Score: +1

Iwan Rheon

as Black Beetle in Justice League 2

Score: +1

Brendan Fraser

as Firefly in Justice League 2

Score: +1

Ray Fisher

as Gridd in Justice League 2

Score: +1

Zac Efron

as Green Lantern in Justice League 2

Score: +1

Leslie Grace

as Batgirl in Justice League 2

Score: +1

Amy Adams

as Lois Layne in Justice League 2

Score: +1

Henry Cavill

as Superman in Justice League 2

Score: +1

Rick Cosnett

as Eddie Thawne in The Flash

Score: +1

Antony Starr

as Reverse Flash in The Flash

Score: +1

Martin Starr

as Reverse Flash in The Flash

Score: -1

Jesse L. Martin

as Joe West in The Flash

Score: +1

Andrew Garfield

as Flash in The Flash

Score: -1

Kiersey Clemons

as Iris West in The Flash

Score: +1

Garrett Hedlund

as Flash in The Flash

Score: +1