Suggestions by @bartrocket

Michael J. Fox

as George McFly in Back to the Future Reboot

Score: 0

Yvonne Catterfeld

as Adult Lorraine Baines-McFly in Back to the Future Reboot

Score: +1

Jason Biggs

as Adult George McFly in Back to the Future Reboot

Score: +1

Chester Rushing

as George McFly in Back to the Future Reboot

Score: +1

Natalia Dyer

as Lorraine Baines in Back to the Future Reboot

Score: +2

Kiernan Shipka

as Jennifer Parker in Back to the Future Reboot

Score: +1

Chandler Riggs

as Marty McFly in Back to the Future Reboot

Score: +1

Charlie Cox

as Batman in The ABSOLUTE Perfect DC Universe

Score: +2

Ariel Winter

as Linda McFly in Back to the Future trilogy [2015-2020]

Score: +1

Jake Short

as Dave McFly in Back to the Future trilogy [2015-2020]

Score: +1

Natalia Dyer

as Lorraine Baines McFly in Back to the Future trilogy [2015-2020]

Score: +1

Chester Rushing

as George McFly in Back to the Future trilogy [2015-2020]

Score: +1

Chandler Riggs

as Marty McFly in Back to the Future trilogy [2015-2020]

Score: +1

Thomas F. Wilson

as Biff Tannen(Old) in Back to the Future Reboot Fancast

Score: +1

Zoey Deutch

as Lorraine Baines(Young) in Back to the Future Reboot Fancast

Score: 0

Elisabeth Shue

as Lorraine Baines(Old) in Back to the Future Reboot Fancast

Score: +1

Michael J. Fox

as George McFly(Old) in Back to the Future Reboot Fancast

Score: +1

Joe Keery

as George McFly(Young) in Back to the Future Reboot Fancast

Score: +1

Chandler Riggs

as Marty McFly in Back to the Future Reboot Fancast

Score: +1

Tallulah Conabeare

as Veruca Salt in Wonka 2: Charlie and the Chocolate Factory

Score: +2