Jack Sabbath was a teenage superhero member of the Unbelievable Unteens, in the 80s decade. However he died in uncertains circunstances, has he didn't remembered how that happened and believed himself to be dead for centuries. In this circunstances he found a lost Lucy Weber and helped her escape Madame Dragonfly cabin of horrors. Hoewever in the cabin he discovered than he had been dead just since the 1980s and he had been member of the Unteens. With his memory returning slowly, Jack went after the rest of the Unteens who had suffered the same memory loss. When he discovered than Strobe, one of his teammates had wrote a comic based on the Unteens adventures, he reactivated her memories to discovered what was the event than fractured the team.