she was a ghost girl that always followed you wherever you go, since... she doesn't remember anything and don't know what to do, so you're her master, congratulations! so yeah, she was a girl that really talkative, cheerful and sometimes can be bratty and annoying. But, she can be... dangerous.. sometimes...

Today, you just get pushed by a big boy because he wants your money for lunch, but then Mon-Mon suddenly show up herself and there you are, for the first time seeing her in a really, really, really different! she change to the big scary cat monster! she had a sharp teeth and nails, big ears and a black eyes, she was standing between you and the bullied. She push him to the wall hardly! and open her mouth that she was about to eat his head!

so, choose. stop her or let her eat his head? :)