Board Thread:Theories/@comment-32554965-20170713180149/@comment-30473998-20180624213259

There's also the unlikely possibility that he was born with it, because the previous shifter died before passing the titan power on (but how could he have controlled it?). If Kruger didn't come from a noble family, perhaps he also could've found secret organizations to teach him how to use his power. After all, he did have a high position in the military before revealing his identity as The Owl and passing his power onto Grisha.