About a century after his imprisonment, Karkull was accidentally released by a thief that had come across the artifact and read its inscriptions out loud. Freed once again, Karkull crushed the artifact and began a rampage in Metropolis catching the attention of Superman. After a brief battle, Karkull managed to scratch Superman and cast a spell of protection around the Daily Planet.
Now safe from any opposition, Karkull began casting a spell that transformed the building into his own realm. Once his spell was completed, Karkull opened a portal to the inner circle and began to summon demons with which to possess and transform humans into demon slaves.
However, before Karkull could extend his influence outside of the building, Superman arrived to stop him. Unfortunately, Superman was unable to defeat Karkull alone and nearly fell in battle. It was then that Doctor Fate arrived to stop him once more. Karkull fought Fate furiously and was horrified to see that the Artifact of Lorta had been reconstructed. Desperate not to be captured again, Karkull attacked Fate, causing him to drop the tablet down toward the portal. Fortunately, Superman managed to retrieve the tablet before it was lost and Fate finished the containment spell. Karkull was once again drawn into the tablet and his demons were drawn in with him. His influence was removed on the building and he is presumably still trapped.
Powers and abilities
As a demon under the protection of the Lords of Chaos, Karkull possessed vast magical abilities. He was able to fire bolts of green magic which were capable of harming Superman, who had a weakness to magic. This magic was also capable of completely destroying a police unit, which indicates he could control the intensity of the blasts.
Karkull was also considerably strong, having strength enough to rival Superman and scratch him with enough force to cause him to bleed. He was also nigh invulnerable. In spite of being vulnerable enough to be pushed back by a vehicle hurled at him, Karkull showed no signs of injury and was only momentarily incapacitated.
Perhaps Karkull's greatest show of magical ability, however, was his surrounding the Daily Planet with a force field of magic that could only be opened by magical means. He was also able to transform the building into a version of his own realm and summon demons, which would possess and transform humans into forms that were capable of harming Superman.
Karkull is named after Ian Karkull, an old Fate rogue.