The Swamp Thing

The Swamp Thing character first appeared in House of Secrets #92 (June–July 1971), with the name Alex Olsen. The comic is set in the early 20th century, when scientist Alex Olsen is caught in a lab explosion caused by his co-worker, Damian Ridge, who intended to kill him to gain the hand of Olsen's wife Linda. Olsen is physically altered by chemicals and the forces within the swamp. He changes into a monstrous creature who kills Ridge before the latter can murder Linda, who has started to suspect Damian. Unable to make Linda realize his true identity, the Swamp Thing sadly ambles to his boggy home.