Board Thread:Questions and Answers/@comment-32269229-20170612085715/@comment-32563139-20170713083400

In Marley, they kept Eldians in camps, and to 'punish' them, the Marleyans would sail over to the island paradise (the island where the main story takes place) take the Edlians up a big wall, inject them with the titan serum (spinal fluid) and kick them off the wall, where they would turn into titans and roam the land.