He'll be played by relative unknown Ray Fisher (above), who has previously portrayed Muhammad Ali on stage. And inevitably, fans not familiar with comics will claim he's a ripoff of Deathlok.
This at least seems like solid casting, in theory...but exactly how many super-characters are they going to throw into this thing by the end? Is Zack Snyder trying to do Watchmen all over again? Maybe he'll have Starro in it this time to make up for cutting the squid?