QUICK BIO
Palla Palla is the most innocent of the Quartet. The Quartet doesn't know the extent of her powers until later on in the series. In fact if you don't play with her she will blow up in your face like a bomb! Her ping ball is blue which too matches her suit. In the end she lets Sailor Moon's ginzouishu heal her and she has a happy life.

SOURCE: Bishoujo Senshi Sailormoon