K. Rool is a fictional character and the main antagonist in the Donkey Kong video game series created by Nintendo. He is the king of the Kremlings, a group of crocodile-like creatures, and often seeks to steal Donkey Kong's bananas or take over Donkey Kong Island. K. Rool is known for his large size, distinctive crown, and various costumes that reflect his different roles throughout the games. First appearing in Donkey Kong Country in 1994, K. Rool has become a popular character in the franchise. He has appeared in several sequels and spin-offs, including Donkey Kong 64 and Super Smash Bros. Ultimate. His character is often portrayed as comical yet menacing, making him a memorable villain in the gaming world.