Alec Holland (New Earth-Six)

The End of Heroes
When all the heroes began to die, Alec failed to notice the events, due to being isolated in Hourma's Swamp and due to being made of multiple forms of plants did not succumb to the sickness that killed the other heroes.

Captured
Alec would awake in his human form a few days after the war between The Secret Society of Super-Villains and the Injustice League began. Alec would make his way to town to his home, where he found multiple Checkmate soldiers waiting for him.

Alec tried to transform into Swamp Thing, but was knocked unconscious with a very powerful tranquilizer before he could.