King K. Rool is the ruler of the Kremlings... At least, that's what he tells people. For a while, it's been said that he named himself King because of how strong he was and how his Kremling kind was afraid of him and didn't like him. As time went on, it seems that he's slowed down on his abusive behavior and was actually starting to act like an actual king. When he first came into the World of Ultimate, he wanted nothing but to be the only king... So he has rivals, them being Ganondorf, Dedede, and Bowser. He has a very proud, cocky, confident, and arrogant personality, always wanting to be on top. He'll use whatever it takes to make sure he wins, especially using tricks he's learned from his days as a pirate. He currently is the adopted father of Weston.
For his voice, it could be something from the old cartoon show.