User blog comment:MeDeoPal/On the Origin of Titans and Shifters/@comment-184.7.125.6-20150112231210/@comment-100.3.33.33-20150125134014

This might be the only logical theory of I've read about Attack on Titan. It explains why some titans are "magic". (The titan in the wall, the colossal titan being able to disappear)

Props to you, sir.