Nexus

You created the "Blood Bush," a disease that grows thorny bushes inside your victims. In a fit of rage, you exterminated many, but upon realizing what you had done, you disappeared for 45 years. You were immortal and slowly went mad from loneliness.

When a daredevil tried to kill you, your illness struck him, but he didn't die. You saw a survivor for the first time and, kneeling down next to him, didn't know what to do.