Accurately described as a "cunning junior duo", the Thunderkittens are small in size and still maturing, yet still serve a vital role in the ThunderCat ranks. Inseparable despite their competitive natures, both WilyKat and WilyKit are impatient to grow up and take their place amongst the adult ThunderCats. Inquisitive and impetuous, the Thunderkittens have been known to stir up their fair share of problems for the others to deal with, but with their good consciences and brave spirits they can always be relied upon to do the right thing in the end. from http://www.thundercatslair.org