Fugu

Fugu, the Frightening is the fourth boss in the game Donkey Kong Country: Tropical Freeze. He is the boss of Sea Breeze Cove, appearing in the level Fugu Face-off. Before the battle, the Kongs meet Fugu while he is small. After the Kongs make fun of his size, Fugu bloats up and the battle commences. He is named after fugu (河豚), the Japanese word for pufferfish and the dish derived from it.

Physical description
Fugu is a large yellow blowfish with blue fins, eyebrows, and goatee. He wears a blue piece of cloth with the Snowmad insignia around his body and around his fins are metal bracelets. Fugu has blue stripes along the front of his face. When bloated, Fugu has orange spikes protruding from his body.

Attacks
Fugu attacks by absorbing water and getting bigger, and spins spitting a small water stream and rolling, or spitting urchins or green fishes, and ramming into the walls and creating lines of enemies

Combat
To defeat Fugu, the Kongs will have to damage him nine times by several means, which include ramming into his backside while he is bloated, ramming into a green pufferfish to hit Fugu, or by hitting Fugu while he is deflated.

Trivia

 * Fugu is the second boss in the Donkey Kong series that is a puffer-fish (The first was Puftoss).