Following that revealing Avengers: Doomsday concept art (check it out here if you haven't already), we have some more of Mushk Rizvi's designs from her official site, this time spotlighting the main characters from The Fantastic Four: First Steps.

Spoilers follow.

This artwork features several different costume designs for the members of Marvel's First Family, as well as some alternate looks for H.E.R.B.I.E the robot. We also have confirmation that Franklin Richards will appear in the movie, and one animated clip shows the lad in a Spider-Man onesie using his powers.

Franklin's role has yet to be officially announced, but arguably the biggest reveal here is our first glimpse of Shalla Bal/Silver Surfer, who will be played by Julia Garner in the movie.

If this design does end up being true to what we see on the screen, it seems Shalla is...