Suggestions by @jackamos2019

Chad L. Coleman

as Tobias Church in Arrow

Score: +1

Mike Dopud

as Viktor in Arrow

Score: +1

David Nykl

as Anatoly Knyazev in Arrow

Score: +2

Tyler Ritter

as Billy Malone in Arrow

Score: +1

Joe Dinicol

as Rory Regan in Arrow

Score: +1

Carly Pope

as Susan Williams in Arrow

Score: +4

Dolph Lundgren

as Konstantin Kovar in Arrow

Score: +1

David Meunier

as Ishmael Gregor in Arrow

Score: +2

Juliana Harkavy

as Dinah Drake in Arrow

Score: +1

Lexa Doig

as Talia Al Ghul in Arrow

Score: +1

Kacey Rohl

as Alena Whitlock in Arrow

Score: +2

Garry Chalk

as J.G. Walker in Arrow

Score: +1

Wil Traval

as Christopher Chance in Arrow

Score: +1

Nick Zano

as Nate Heywood in Arrow

Score: 0

Melissa Benoist

as Kara Danvers in Arrow

Score: 0

Patrick Sabongui

as David Singh in Arrow

Score: +1

Alexander Calvert

as Lonnie Machin in Arrow

Score: +1

Jimmy Akingbola

as Baron Reiter in Arrow

Score: +1

Ryan Robbins

as Conklin in Arrow

Score: +2

Elysia Rotaru

as Taina Venediktov in Arrow

Score: +1