Kaboing

Kaboings first made their apperance in Donkey Kong Country 2: Diddy's Kong Quest for the SNES as common enemies that, much like Klomps, possess peg-legs (though Kaboings have two robotic ones compared to Klomps' one wooden one). Because of these peg-legs, Kaboings are unable to walk or move horizontally, and thus bounce to extreme heights in an attempt to land directly on the Kongs' heads. Two versions exist: a traditional grey version and a green version that bears a similar resemblance to the Kritters from the original Donkey Kong Country. The latter can also jump much higher and faster. 
 
Kaboings reprised their roles in Donkey Kong Land 2 on the Game Boy.