Blue ChuChus
This Chuchus are like they're much like their different colored cousins the Green ,Red Chuchus ,and Yellow Chuchus. This Chuchus are electrically Charged and must be stunned with a boomerang before atempt to slash them with your sword. Another way to deal with them is to take them out with ranged weapons.
In the Wind Waker, after killing a Blue Chuchu you obtained a Blue Chuchu Jelly which could be refined to make Blue Potions. In the Minish Cap a giant Blue Chuchu is a miniboss in the Temple of Droplets. In fact it is justa normal sized Chuchu but since Link is the size of a Minish at that time the Chuchu is a giant.