King Koopa is the tyrannical Koopa, and Bowser’s equal partner of Koopa Enterprises in Lower Anderson City.

King Koopa is often dishonest and treacherous, as well as sadistically enjoying doing really horrid things, including trying to ruin Christmas for everyone every so often. While King Koopa is not beyond keeping his word, he frequently does break it. King Koopa will not hesitate to dispose of those who have outlived their usefulness to him. He even takes on other villains and becomes an even bigger threat to the land they were targeting.

His voice should at least come close to sounding like Harvey Atkin.