Swamp Thing and Concrete

I'd love to see a story that unites these two characters.  Once human, each was transferred into an incredibly powerful new body and status quo.  Despite the extreme change in their outward appearance and altered perceptions, their intellect and thoughtful natures are constant reminders of the men that they once were.  Their stories are filled with beautiful artwork and mind bending ideas, and it would be a treat to see them cross paths some day.