After Harry blows up part of Little Whinging, he is collected by a band of Minions and taken back to the Netherworld, where he learns that he is to become the next Overlord. And will he Dominate or Destroy those who stand in his path? DarkHarry and Harem

Poll closed Evil has been always vanquished, or got itself stuck in other dimensions, but even under those circumstances it finds a way out. The Third Overlord finds an unexpected way out and a new domain, which he has to share. Harry/Overlord Crossove

The night young Harry Potter somehow vanquished the dreaded Lord Voldemort was also the night he suddenly disappeared. What does a mysterious woman from Lily's past have to do with these events?

I have read all the Harry Potter and Overlord Crossovers that have been published on this site and found them incomplete, without a full backstory, or done by authors that do not have the full grasp on both subjects. I wish you luck on this story.