Suggestions by @user_359813

Amy Adams

as Lois Lane in Batman vs Superman: Dawn of Justice

Score: +1

Henry Cavill

as Clark Kent/Superman in Batman vs Superman: Dawn of Justice

Score: +1

Michael Shannon

as General Zod in Man of Steel

Score: +1

Diane Lane

as Martha Kent in Man of Steel

Score: +1

Kevin Costner

as Johnathan Kent in Man of Steel

Score: +1

Nicholas Hoult

as Jimmy Olsen in Man of Steel

Score: +1

Amy Adams

as Lois Lane in Man of Steel

Score: +1

Henry Cavill

as Clark Kent/Superman in Man of Steel

Score: +1

Eric Bana

as General Zod in Superman

Score: +3

Billy Zane

as Lex Luthor in Superman

Score: +3

Jaren Lewison

as Jimmy Olsen in Superman

Score: +2

Justice Smith

as Jimmy Olsen in Superman

Score: -1

Bruce Campbell

as Perry White in Superman

Score: +2

Jamie Lee Curtis

as Martha Kent in Superman

Score: +2

Bruce Greenwood

as Johnathan Kent in Superman

Score: +2

Felicity Jones

as Lois Lane in Superman

Score: +3

Ian Harding

as Clark Kent/Superman in Superman

Score: +3

Ian Quinlan

as Samuel “Sam” Scudder/Mirror Master in The Flash

Score: +1

Antony Starr

as Harrison Wells in The Flash

Score: +1

David Harbour

as Henry Allen in The Flash

Score: +1