User blog comment:NickFusi0n/A Theory on The Coordinate and The Wall Titans/@comment-93.209.16.74-20140525064024/@comment-24930713-20140526013455

At the very least Reiner, Bertolt, and Annie are cowards. Seeing as the first two believe mankind has no future. And since where I read it said "world". I'm not quite sure that those 3 are from Earth or maybe not from the same dimension as the story takes place. But who knows. :/

I agree with one of the previous comments, but I wouldn't count Ymir as an original titan shifter.