My novel has 2 important black characters, with one already showing up and the other to appear at some point in the future. Anyway, the one who appeared is Evangeline Vaedra, vain noblewoman acting as the etiquette consultant for Hollowbane Academy by day, ruthless and cold Spymaster of the Executors by night.
I took a major inspiration from Aveline de Grandpré from Assassin's Creed Liberation, with the whole Persona mechanic that game had. I have a blast writing about her and she's to be one of the major figures in the story at large.
If you are curious, go give it a read and, if you do, don't forget to say hi.