"Chibi" means small in Japanese and it's used to describe the short, chubby versions of anime characters and such. Where did you get them from? They're awesome.
ok... to be perfectly honest.... my little sister recently moved out of our auntie's house and she left behind some stuff that she didn't want. I helped my auntie box it up and she was going to donate it somewhere so I pulled out a few things to post on here... these are some of what I pulled aside.