After looking at hundreds of comic book covers, it becomes quickly apparent that not every cover is 100% original. Whether done intentionally or even underhandedly, there's something about uncovering these "swipes" that adds a new element of fun to reading and collecting comics. Swamp Thing debuted in House of Secrets #92 and went on to become the most prominent swamp monster in the history of comics. The limited [print run: 2,000] auxiliary variant of No Hero #6 paid homage to this classic.
House of Secrets #92 House of Secrets #92
July 1971
Bernie Wrightson
 No Hero #6 No Hero #6 (auxiliary)
May 2009
Juan Jose Ryp
On Ebay: Swamp Thing | No Hero On AtomicAvenue: Swamp Thing | No Hero