I lied, we need more evil kids and I'm not out of fairytales yet. These are the least ones though.

Male

The Son of the Yukionna {Taken}

~Pale as hell
~The heat makes him faint
~He can't fly, but he can float a little
~He can use his breath to freeze things
~He's not against killing you at all
~Very protective of his little sister
~Sixteen

The Son of the Amabie

~ Is covered in patches of scales from the neck down
~Can breath under water
~Usually knows when something really good or bad is about to happen
~Hair long enough to rival Rapunzel's...Son's
~Seventeen

The Son of the Baku

~He has a terrible temper
~He can eat dreams and nightmares. That means that he knows what your dreams are (only when he does this) but the dreamer won't remember what the dream was at all.
~He has horns and an ox tail
~Dispite his temper, he's actually rather shy... Unless he's mad of course
~Seventeen

The Son of the Unicorn

~Is actually kind of evil
~He's beautiful though
~Has a single horn
~Can shift between being a human and a unicorn
~Glows in the dark, sometimes when he doesn't want to
~Fifteen

The Daughter of Florine {Younger}

~ Loves bluebirds
~Happy most of the time
~Cats usually try to bite her
~Follows her big sister like a list puppy
~Friendly
~Eight

Daughter of the Yukionna

~Also pale
~A tiny beauty
~ Shy
~When she sneezes, it snows around her for a little while
~Frail
~Can float a little
~The heat makes her faint
~Seven