Koopa is often dishonest and treacherous, as well as sadistically enjoying doing really horrid things, including trying to ruin Christmas for everyone, as he saw it as a "Bah Humkoop". While Koopa is not beyond keeping his word, he frequently does break it. Koopa will not hesitate to dispose of those who have outlived their usefulness to him. As seen in the episode Crimes R Us, Koopa's justification for turning on Clyde is that he, had his fingers crossed when he agreed to split everything stole