Steel
Originally a replacement for Superman after he died, Steel aka John Henry Irons, makes references to African American history and in particular draws inspiration from John Henry. His powers are given to him mostly by his suit, but he has genius-level intellect and insane strength on his own. It would be cool to have a series which specifically focused on African American strength, courage, and goodness. In the wake of Black Panther, this seems like a no-brainer, and overdue.