User blog comment:Gundam Legilis/Is Cardin smarter than he looks?/@comment-25396609-20150523030754/@comment-25396609-20150523031340

New headcannon: Cardin is half faunus. half APE faunus. since apes are lack distinctive features (aside from maybe opposable feet, suddenly those plate boots are looking awfully fishy) it would be easy to hide it, and if he were somehow an illegitimate child, he may feel resentment towards his faunus parent and takes it out on those with obvious faunus traits.