I'm sure I'm not the only one who's thought about this: what does Van der Decken look like? I've found depictions of Vanderdecken from the real-world folklore, and no consistencies exist between any of them. If you want to see them, search for "Vanderdecken" (wikipedia's spelling) on google images. Only two less than helpful pictures of him are all we have to go on right now. All I can tell is he has a narrow head and what look like pointy shoulders, possibly long hair, and at least one normal human hand, so he is human, of that much we can be sure (and no tentacle beard, so POTC's Davy Jones is out as a design model). So what do you think he looks like? To be honest, his face almost reminds me of Kaido.