Centuries ago, Nagorbu developed a magnet that could repel human flesh in an effort to solidify the military might of Atlantis. However his ruler Tolan refused to use the weapon and ordered it to dumped into the ocean. Nagorbu still sought to use the device for his own end, and against Tolan's wishes led expeditions to try and recover the device from the ocean floor. Attempts to recover it caused a massive flood which ultimately sank Atlantis.
It is unknown if Nagorbu survived the sinking of Atlantis, but died at some point.
- The only recorded tale of Nagorbu was told to Betty Dean by the Sub-Mariner, who admitted that he is unsure of how much truth there is to the story. While the story contradicts the known facts surrounding the Great Cataclysm, it does not discount that Nagorbu ever existed.