User blog comment:OnePieceNation/The New Kind/@comment-4493594-20120317082036

Made a similar blog before. Let me sum up the results for ya:
 * Theory #1: They are Minkmen.
 * Theory #2: Like Papagu, they grew up thinking they are humans until they realized they aren't.
 * Theory #3: ALIENS! (*insert Ancient Aliens Guy meme here*)
 * Theory #4: Someone got raped by an ice bear/lion.
 * Theory #5: They are just really, REALLY hairy humans... with animal features...
 * Theory #6: Oda is just ****ing with us.