Kristoffer Trondsson & Otto Stigsson:
In 1523, Christian II, King of Denmark, Norway and Sweden, lost his throne to Fredrik I. At that time, the most feared pirates were those who stood by Christian II to help him gain back his throne. Their job was to raid the sea and abduct as many ships as they possibly could, so that the former king could use these riches to stand against Fredrik I. It took him eight years, but it finally worked. However, the pirates who had been his allies now became outlaws fighting against him.
His solution was Kristoffer Trondsson and Otto Stigsson. They were both given the position as pirate hunters, and led their men into battle against the pirates. Even though they were widely feared, they were not successful in their job. Only one single ship was recorded to have been taken back by the pirate hunters. In the end, they both became bored with finding nothing, and became pirates themselves! They mostly abducted trade ships from Holland and Scotland on their way to Norway. Later on, Trondsson was actually hired as an admiral, in Norway.