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 read it said "world". I'm not quite sure that those 3 are from Earth or maybe not from that dimension.

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