No one predicted that you would be the one to control him. He obeyed you without hesitation.

So higherups decided that was your job. To keep him in line if he ever decided to cross it. Though it didn't seem like he would be aggressive in any way. You were wrong.

After a recruit had refused to follow your orders, Roach had risen up, towering over by your shoulder with his teeth bared at the recruit. He didn't growl nor did he attack the recruit...but he looked as if he wanted to.