Suggestions by @flzskpl

Willem Dafoe

as Nudius Vulko in Aquaman: King of the Sea (2018)

Score: +1

Emilia Clarke

as Mera in Aquaman: King of the Sea (2018)

Score: +1

Yahya Abdul-Mateen II

as David Hyde in Aquaman: King of the Sea (2018)

Score: +1

Jason Momoa

as Arthur Curry in Aquaman: King of the Sea (2018)

Score: +1

Rick Cosnett

as Barry Allen (credits scene) in Cyborg (2017)

Score: +1

Ciarán Hinds

as Steppenwolf (flashback) in Cyborg (2017)

Score: +1

Russell Wong

as Gizmo in Cyborg (2017)

Score: +1

Chris Cooper

as Mr. Orr in Cyborg (2017)

Score: +1

Michael Cassidy

as Will Magnus in Cyborg (2017)

Score: +1

Keke Palmer

as Sarah Charles in Cyborg (2017)

Score: +1

Corey Stoll

as Red Tornado in Cyborg (2017)

Score: +1

Ioan Gruffudd

as Dr. T.O. Morrow in Cyborg (2017)

Score: +1

Joe Morton

as Dr. Silas Stone in Cyborg (2017)

Score: +1

Ray Fisher

as Victor Stone in Cyborg (2017)

Score: +1

Lance Reddick

as The Martian Manhunter (cameo) in The Suicide Squad (2017)

Score: +1

Jason Momoa

as Arthur Curry (cameo) in The Suicide Squad (2017)

Score: +1

Clancy Brown

as Brimstone (voice) in The Suicide Squad (2017)

Score: +1

Common

as Monster T in The Suicide Squad (2017)

Score: +1

Scott Eastwood

as GQ Edwards in The Suicide Squad (2017)

Score: +1

Numan Acar

as Ravan in The Suicide Squad (2017)

Score: +1