Really Gnawty Rampage

Really Gnawty Rampage is the boss level of the Gorilla Glacier, the fourth world of the game Donkey Kong Country. The Kongs must beat the titular giant beaver Really Gnawty, a harder palette swap of Very Gnawty, to progress to Kremkroc Industries, Inc..

SNES
As with all world boss fights in Donkey Kong Country, the fight takes place in an arena filled with bananas; and if the player enters with a single Kong, a DK Barrel is instantly broken to ensure they start the fight with both Donkey and Diddy.

Really Gnawty attacks by hopping across the arena, turning only if it reaches the edges or is attacked. To attack, the player must jump on his head, causing him to gasp, laugh at the camera and make a high leap (during which it is invulnerable) homing in on the Kongs. After each hit, Really Gnawty becomes progressively faster, his hops get further and higher and he takes one more giant leap each time (i.e., two leaps after two hits, and so forth).

To defeat Really Gnawty, Donkey Kong or Diddy Kong must jump on him five times, at which point he gasps and collapses onto the ground, a Giant Banana falls and the lead Kong celebrates.

Game Boy Advance
In the Game Boy Advance port of Donkey Kong Country, Really Gnawty is recolored blue, is larger than he was in the original game, and instead of his high leap attacks, he jumps all the way to the other side of the arena, causing fragile stalactites to fall to the ground before resuming his attack.