Nuklo is then taken to the newly opened government energy facility Project: Pegasus for treatment and study. There his radiation leveliswas diminished significantly and his education was started. After a few years, he is placed in the custody of scientists in a special facility at General Hospital in Manhattan where he is treated by a psychologist named Dr. Linda Hyams and a radiologist named Dr. Ira S. Bishoff, who was secretly the Whizzer's old nemesis Isbisa. Over the course of months, Isbisa siphons Nuklo's radiation and transfers it to himself, in order to gain sufficient power to exact revenge upon the Whizzer. When Robert Frank finally manages to get a court order turning his son over to his care, Isbisa attacks. At the battle's end, the Whizzer dies of a heart attack rescuing his son, but Nuklo is permanently cured of his excess radiation.