Socku appears as a green mouse made out of clouds who wears a big sock as a hat. Socku also enjoys playing sudoku (he's really good at it) most of the time. He also loves his giant sock/hat so much. If one day he loses it or you take it off of his head he'll get sad and cry a lot so please be nice with this little guy ! He also loves amusement parks and enjoys roller coasters and has a huge passion for hats. Socku also has a happy-go-lucky personality !