I don't think many people know this but Galactus' form changes depending on which planet he's visiting/planning to devour. What we know as Galactus is his "human" form. I wanted to depict a version that was a bit more permanent. Going in, I had the idea of having his flesh and his "outfit" being almost the same thing, and maybe a bit biomechanical. I think I could've pushed these concepts a bit more, but I was worried about not having the final design evoke the image of Galactus.