Suggestions by @santerir

Shaquille O'Neal

as Ferdinand in Wonder Woman: Enemy or Friend

George MacKay

as Barry Allen in The Flash: Scarlet Speedster

Jake Gyllenhaal

as The joker in DCU

Jack Wolfe

as Beast boy in DCU

Mahershala Ali

as Martian Manhunter in DCU

Adria Arjona

as Wonder woman in DCU

Oliver Jackson-Cohen

as Batman in DCU

Graham McTavish

as Dr. Saul Erdel in Martian Manhunter

Wood Harris

as J'onn J'onzz in Martian Manhunter

Carmen Ejogo

as M'yri'ah J'onzz in Martian Manhunter

Michael James Shaw

as David Hyde in Aquaman: Kingdom

Winston Duke

as David Hyde in Aquaman: Kingdom

An Unknown Actor

as Nightwing in James Gunn's DC Cinematic Universe

Lewis Tan

as Aquaman in James Gunn's DC Cinematic Universe

Zazie Beetz

as Catwoman in James Gunn's DC Cinematic Universe

Carl Weathers

as Perry White in Superman: Hope

Zazie Beetz

as Cat Woman in The bat-family

Madelaine Petsch

as Batgirl in The bat-family

Aramis Knight

as Nightwing in The bat-family

Rish Shah

as Nightwing in The bat-family