Cover Art of Swamp Thing (1986) #104.
*...but Alec Holland was dead. Over time, the creature succumbed to every hope of regaining its humanity... but always to no avail. He soon learned why. The plants in the Louisiana swamp, altered by the bio-restorative formula, had ingested Holland's decaying remains through hungry roots. They thus became a faded copy of the dead man's powerful mind and shaped their cells to approximate a human body. Emerging from the swamp that day, the creature believed that it was Alec Holland... but that was an illusion. The creature was and is and always will be... Swamp Thing. *Source: Back of card