In their natural form, vermicious knids are huge, dark, egg-shaped beings that are quite at home in the vacuum of space. Their homeworld is the planet Vermes, a fictional planet located (as stated in dialogue) 184270000000 miles away from Earth. Their one weak point is that they are show-offs; they cannot resist shaping themselves to spell the one word they know how to spell–SCRAM–before they attack.
According to Willy Wonka, numerous sentient alien species that formerly existed have been wiped out by the knids’ predations. Wonka claims that the only reason humans have escaped this fate is because the Knids cannot enter Earth’s atmosphere without being burned up by friction—despite the fact that among the worlds that have been depopulated by the knids is Venus, which has a substantial atmosphere.
Ok, you’re weird