The Fantastic Four are four american heroes that have been some of the first heroes that debuted in Marvel comics since the 1960s. They were all (let's just say) plain american and their arch enemy Doctor Doom has always been the most popular of all Marvel comic book supervillains.
But now it appears certain changes are made to some of the characters' ethnicities which happened first off in Iron Man 3 with Ashley Hamilton casted as an unfortunate Jack Taggert and then with staff of Amazing Spider-Man 2 purposly casting Jaime Fox as Electro and now with Michael B. Jordan being rumored to join the rebooted Fantastic 4 movie as Johnny Storm/Human Torch, which means if that happens, Susan Storm the Invisible woman may need to be played by an African American actress as well because Susan is Johnny Storm's sister and these are the best candidates to do her in the reboot.
Meagan Good
Zoe Kravitz
Shanika Warren-Markland
Feel free to decide on who should play Invisible Woman.