Patchwork Man was the 2nd foe to fight Swamp Thing. He had been Gregori, the brother of Arcane, Swamp Thing's main foe, until he was severely injured while stepping into a minefield, leading to his appearance, the work of his brother Anton, who had used the same techniques he used to create his 2 series of UnMen, to repair his mutilated body. The result was a monster,the Patchwork Man.
Gregori went insane and Anton had to lock him in with his 2nd series of UnMen, more human in form but almost mindless, unlike the 1st series (weirdly deformed, but with brilliant minds). He was seen in one panel, unidentified, in Swamp Thing #2, but in #3,Swamp Thing engages Patchwork Man in battle, while endeavoring to rescue Abby. Due to his injuries & transformation into a monster,the Patchwork Man can only remember that Abby is his daughter and he was to rescue her. He falls apparently to his death, and Swamp Thing and Abby go on to other adventures.
He is believed to have died in a severe storm, after which Abby could only find body parts.