I had this great idea of creating a box charactor and then fixing the form with sculpt tools. The box or cubes would get all the vertices needed for defining the character, but it would still be a box. Then after this is done, using sculpt tools to make the form, using the existing vertices.
I think someone could place all the vertices needed over a picture, then make the form after this is done.
IF it would work, the box charactor could be subdivided into high levels of divisions. Before sculpting and after sculpting.