Someone who is clumsy to the point of being disrespectful; they hurt people and destroy things and claim that it was all by accident, yet they seem to always come out unharmed.
That Klumpse is so stupid he stepped on my toetwice and knocked over my vase. Klutz Baffoon
Santa's evil twin who accompanies him during Christmas to beat the naughty chilluns with a bundle of hickory sticks, while Santa gives gifts to the good chilluns.
"That was the worst Christmas ever; I didn't even get any presents, Krumpus just came and beat the bajeesus outta me!"