Mr. Puncho

Mr. Puncho  is a character appearing in Rowley's comic strip, Action Fighterz in The Wimpy Kid Do-It-Yourself Book. In the comic, he was battling Captain Klobber, who was going to hit Mr. Puncho with a skillet, but the Action Fighterz moved slowly, and it took a week for Captain Klobber to reach Puncho and hit him, and later in the next week, Mr. Puncho hit him back.

Presumably, he is a seed-shaped green bean with a dark green suit showing a black "P" in the center, and a black cape.