Suggestions by @eddiesyourdad

Joel Kinnaman

as Oliver Queen in The Flash

Score: +1

John Boyega

as Victor Stone in The Flash

Score: +1

Joseph Quinn

as Barry Allen in The Flash

Score: +1

Kathryn Newton

as Carol Ferris in Green Lantern Corps

Score: 0

Jude Law

as Sinestro in Green Lantern Corps

Score: +1

Ben Barnes

as Anti-Monitor in Green Lantern Corps

Score: +1

Sterling K. Brown

as Martian Man Hunter in Green Lantern Corps

Score: +1

Jacob Elordi

as Hal Jordan in Green Lantern Corps

Score: +2

Nathan Fillion

as Guy Gardner in Green Lantern Corps

Score: +1

Idris Elba

as Jon Stewart in Green Lantern Corps

Score: +1

LaKeith Stanfield

as Floyd Lawton in Batman The Brave & The Bold

Score: +1

Logan Lerman

as Jason Todd in Batman The Brave & The Bold

Score: +1

Laurence Fishburne

as Lucius Fox in Batman The Brave & The Bold

Score: +1

Ty Simpkins

as Damian Wayne in Batman The Brave & The Bold

Score: +1

Charles Dance

as Alfred Pennyworth in Batman The Brave & The Bold

Score: +1

Bruce Campbell

as Jim Gordon in Batman The Brave & The Bold

Score: +1

Kate Beckinsale

as Rachael Dawes in Batman The Brave & The Bold

Score: +2

Benicio del Toro

as Sal Maroni in Batman The Brave & The Bold

Score: +1

Maya Hawke

as Barbara Gordon in Batman The Brave & The Bold

Score: +1

Josh Brolin

as Bruce Wayne in Batman The Brave & The Bold

Score: +1