David Harewood

as Joel Steadman

as Senator Rayencourt

as David Estes

as Hank Henshaw / J'onn J'onzz / Martian Manhunter / John Jones

as Hank Henshaw / Cyborg Superman

as Tuck

as Denis Bottomley

as Pierre

as Scorann

as Sam Saperstein

as Walter Sisulu

as Narrator

as Patrick Nye

as Daniel

as Trevor

as Major Simon Brooks

as Inspector Joe Robinson

as Narrator

as Max Robertson

as Dr. Mike Gregson

as Presenter