Jack the Knife

Jack the Knives are formed after all their rage of butter-spreading and other jobs knives do. They are bigger versions of knives (however not too big, about the size of Wario) and have eyes. They jump out of tables of the S.S. Caviar and try to attack Wario.

Trivia

 * Their name is a pun of "jackknife," a type of knife, and the song Mack the Knife. The name of a boss from Super Mario RPG, Mack, is also based on this pun.