Suggestions by @alexthemonster

Olivia Cooke

as Kory Anders in DC HBO Universe

Score: +1

Millie Bobby Brown

as Rachel Roth in DC HBO Universe

Score: +1

Amir Wilson

as Wally West in DC HBO Universe

Score: +2

Finn Wolfhard

as Garfield Logan in DC HBO Universe

Score: +1

Cole Sprouse

as Dick Grayson in DC HBO Universe

Score: +1

Liam Hemsworth

as Oliver Queen in DC HBO Universe

Score: +1

David Oyelowo

as John Stuart in DC HBO Universe

Score: +1

John Boyega

as John Stuart in DC HBO Universe

Score: +1

Chiwetel Ejiofor

as John Stuart in DC HBO Universe

Score: +1

Jonathan Majors

as John Stuart in DC HBO Universe

Score: +2

Alexander Ludwig

as Arthur Curry in DC HBO Universe

Score: +1

Kyle Allen

as Barry Allen in DC HBO Universe

Score: +3

RJ Cyler

as Victor Stone in DC HBO Universe

Score: +1

Ana de Armas

as Diana Prince in DC HBO Universe

Score: +1

Chris Pine

as Hal Jordan in DC HBO Universe

Score: +1

Richard Madden

as Clark Kent in DC HBO Universe

Score: +1

Scott Adkins

as Bruce Wayne in DC HBO Universe

Score: +4

Ming-Na Wen

as Avatar Kiyoshi in Avatar The last Airbender

Score: +1

Ben Kingsley

as Avatar Roku in Avatar The last Airbender

Score: +1

Donnie Yen

as Admiral Zhao in Avatar The last Airbender

Score: +1