Moldywarts

Moldywarts was the main antagonist of the episode Orange Potter and the Deathly Apple. Like his name states, he was a moldy apple covered in warts. He and Snapefruit was making an attempt to defeat Orange Potter and trap Pear Weasly and Passiony Granger into big molds of gelatin. Orange Potter was visited by Grandpa Lemondore in his dreams to find out the secret to defeating Moldywarts. The secret was that Orange Potter was to be friendly to his enemies so they would not expect being knifed. Moldywarts was knife shortly after this, and Orange Potter began eating the jello.

Trivia

 * He is the third apple to be knifed somewhere besides the kitchen (the first one being Apple).