Suggestions by @jgrim

Kevin Feige

as Producer in Black panther

Score: +3

Ryan Coogler

as Director in Black panther

Score: +4

Henry Golding

as Namor the submariner in Black panther

Score: +4

Danai Gurira

as Okoye in Black panther

Score: +4

Manu Bennett

as Kraven the Hunter in Black panther

Score: +1

Theo James

as White wolf in Black panther

Score: +1

Lupita Nyong'o

as Nakia in Black panther

Score: +5

Letitia Wright

as Shuri in Black panther

Score: +4

David Oyelowo

as Black panther in Black panther

Score: +2

Gal Gadot

as Agent Helix in G.I. Joe: Ever Vigilant

Score: +1

Charlie Hunnam

as Rock 'n Roll in G.I. Joe: Ever Vigilant

Score: 0

Algee Smith

as Duke Thomas in Bat-Family (Arrowverse)

Score: +2

David Oyelowo

as T’Challa in Black Panther: Earth-1

Score: -2

David Oyelowo

as King T’CHALLA in Black Panther Hulu series

Score: +2

Sebastian Stan

as Luke Skywalker (Young) in Star Wars: Alpha

Score: +1

Hayden Christensen

as Darth Vader in Way of the Force: A Star Wars Story

Score: +1

Shameik Moore

as Static Shock/Virgil Hawkins in Static Shock (Live-Action Movie)

Score: +1