I see what you did there
I know,and to make clear green lantern is a powerhouse.
What are you talking about? Lobo is an alien. Hawkman is either an alien and/or a reincarnated Egyptian pharaoh, Black Adam is also Egyptian (shocker I know but Egyptians were black).
Rock could play anyone of those characters well, and he could pull off John Stewart too.
I know about lobo and i almost forgot about him so that's why i said he could play him i guess.
Hawkman the alien is not black and of course there are a number of hawkmens.The one that was an egyptian king,well he could be black as an egyptian but reincarnated i guess he would be white since they showed that hawkman as such too.
The egyptian king should be black but coming back he should remain what he was in modern times,white.
As for the egyptians,i know the original egyptians were black,of course some later were not and overtime things started to change but black adam should remain what he is,a brown race looking man from the comics.
There might have been a few brown looking types in egypt by this time or around 3,000 b.c. of course some would say not,egypt was still all black,and if this is the case then black adam should be black but not just in movies if he is shown,but in comics etc..
Black adam you could get away with it i guess, but the alien hawkman with no connection to egypt? he should remain what he is and the other hawkman too, maybe less so since he was an egyptian king but still he is different person today with only memories of who he use to be.
Anyway those two you may get away with it,black adam and the first hawkman,the second one or aquaman etc..,they should remain more so what they are.