Swamp Thing

Origin

Holland is eventually hunted down by the villainous Sunderland Corporation, who seek to find the secrets to his research, and kill him in a hail of bullets.

During the autopsy it is discovered that Swamp Thing's body was only superficially human, its organs little more than crude, nonfunctional, vegetable-based imitations of their human counterparts, meaning that there was no way Swamp Thing could have been human. This meant the Swamp Thing was not Alec Holland, but only thought that it was: Holland had indeed died in the fire, and the swamp vegetation had absorbed his mind, knowledge, memories, and skills and created a new sentient being that believed itself to be Alec Holland. Alec Holland would never be cured because there was nothing to cure.

It is later revealed that there have been dozens, perhaps even hundreds of Swamp Things throughout the time of man and that all versions of Swamp Thing were created for the purpose of being the "defenders" of the Parliament of Trees, an elemental community also known as "The Green" that represents all plant life on Earth which includes the original Swamp Thing Alex Olson.

The Swamp Thing has a romantic relationship with Abigail Arcane, the niece  of his nemesis Anton Arcane.

Swamp Thing Outside of Comics

Over the years Swamp-Thing has been utilized in the media many times. Although none of these were landmark successes, they do have a fan following; however, none of these media appearances used the stories setup by Alan Moore. Instead they opted for the traditional origin.

Movies

Movie Swamp Thing

Television

Cartoon

Swamp Thing cartoon

We Know You Blinked, So Here It Is

DCAU