Suggestions by @lf182133

Luke Bracey

as George "Digger" Harkness in The Flash

Score: +1

Jodie Comer

as Caitlin Snow in The Flash

Score: +1

Aaron Taylor-Johnson

as Sam Scudder in The Flash

Score: +1

David Tennant

as Clifford Devoe in The Flash

Score: +1

Jonathan Majors

as Gorilla Grodd in The Flash

Score: +1

Boyd Holbrook

as Leonard Snart in The Flash

Score: +1

Tatiana Maslany

as Dr. Tina McGee in The Flash

Score: +1

Kaniehtiio Horn

as Detective Kristen Kramer in The Flash

Score: +1

Anthony Starr

as Eobard Thawne in The Flash

Score: +1

Lili Reinhart

as Patty Spivot in The Flash

Score: +1

David Wenham

as Harry Allen in The Flash

Score: +1

Jane Levy

as Iris West in The Flash

Score: +1

Wyatt Oleff

as Bart Allen in The Flash

Score: +1

Henry Lawfull

as Wally West in The Flash

Score: +1

Jimmy Smits

as Jay Garrick in The Flash

Score: +1

Lucas Till

as Barry Allen in The Flash

Score: +1

Rory Kinnear

as Braniac in Justice League

Score: +1

Tserenbold Tsegmid

as Vandal Savage in Justice League

Score: +1

Amarsaikhan Baljinnyam

as Vandal Savage in Justice League

Score: -1

Martyn Ford

as Mongul in Justice League

Score: +1