Nova (real name is Katrina Colchnzski), during one of E-Man's adventures was kidnapped by the evil Samuel Boar and taken to the center of the Earth. There she was tied up and left to die when a sub-terranean sun exploded. E-Man,too late to save her, vowed revenge on Boar.
When E-man said, "Boar will rue the day..", he heard Nova's voice respond by saying, "Rue, where did you pick that word from?" To E-Man's astonishment, Nova had been transformed into pure energy.