and wanna share it with you
They are only dropped by monsters with special attributes (Freezing, Super Armor, etc.). They have the highest drop rate on 1 star dungeons and the lowest on Champion. But because 1 star dungeons do not have as many special attribute monsters but have the highest drop rates, and Champion mode dungeons have all special attribute monsters, but the lowest rate, the drop for Big Heads seems to be balanced out.
if you wanna know more here's the link
