Less than a quarter the size of a Whumpling, these more recent variants are notoriously energetic, constantly running in circles or literally bouncing off the walls if left unsupervised. They produce a smaller and weaker explosion than their larger predecessor, but scatter an oil that immediately ignites on contact with air and will continue to burn where it lands for several hours.

A Whumplet forced to stop moving will invariably detonate with sheer frustration. It is not known if they even have the limited vocabulary of a Whumpling, as no Whumplet has ever stopped giggling long enough for formulate a complete word.