Cuprine and Ptilol are the last of Witches 5. They are twins, and live in one body
( actually they're in a statue ). They can only separate and fight in a spetial dimention.
That's exactely where they meat Sailor Scouts. And that was already in Myugen school, on the
top levels after Villuy's defeat.
Their main power is that they are always together, knowing each others thought they are
a perfect pair. As long as they are together noone could defeat them. After getting busted a lot
Sailor Senshi found that out, and defeated them after separating.
Cuprine and Ptilol's defeat was the actuall end of my beloved Witches 5...
Oh yes to make no missunderstanding: Cuprine is the one with blue hair.