Géo Trouvetou
Emil has caused a lot of trouble for Mickey Mouse, Super Goof, Donald Duck, Scrooge McDuck, Gyro Gearloose, and other characters on various occasions. Sometimes he has teamed up with Black Pete, the Beagle Boys, Mad Madam Mim, or other bad guys in the Mickey Mouse universe or the Duck universe. There are two stories where John D. Rockerduck hires Emil to take advantage of his inventive genius. "Zio Paperone e la sfida robotica ("Uncle Scrooge and the Robotic Challenge") and "Dog Eat Dog".