Hopgoon

Hopgoons are enemies that appear in Donkey Kong Country Returns and its Nintendo 3DS port, Donkey Kong Country Returns 3D. They are a slightly stronger variant of Frogoon, and look exactly alike except for being yellow in color. Their only behavioral difference from Frogoons is rather than inflating themselves in one place, Hopgoons move around the level and can even hop over gaps. Donkey Kong and Diddy Kong can easily defeat them with a jump, by rolling into them, with Rambi, or with a barrel. While Frogoons can be defeated by Diddy Kong's Peanut Popgun, Hopgoons are only stunned by it.

Reference
Froschhüpfler