Board Thread:Questions and Answers/@comment-29752445-20170928174955/@comment-33212344-20170929162418

Perhaps Zeke managed to develop a method how to do it. The manga said that those who are injected with the serum containing Zeke's spinal fluid can be transformed and controlled by the Beast Titan. Though I'm not completely how he did it with the village. I should read the manga from the start again.