Monterey Jack, or Monty to his friends, is the tetartagonist of Chip n Dale Rescue Rangers. He is an adventure-loving Australian mouse who spent years traveling the world before a chance meeting with Chip and Dale during their first case. After Fat Cat destroyed his home, Monty and his sidekick Zipper decided to join the group in their detective work. Stronger and larger than the others, Monty can be quick to anger if he, or his friends, has been offended. This trait sometimes leaves him ready to do battle with a much larger opponent, and the others having to calm him down. Monty has an overpowering addiction to cheese, and the sight or smell of cheese causes him to be almost hypnotically drawn to it. Monty loves to tell stories of his travels, even if the others often stop his reminiscing, and he often uses colorful "pseudo-australianisms" while talking, such as "Strike me starkers.' Monterey Jack is the only Rescue Ranger known to have two living parents, Cheddarhead Charlie and Camembert Kate, who are also travelers. Also, names of his entire family, including his own, have references to various types of cheese. Monty is most frequently found in the company of either Zipper or Dale, whose fun-loving nature matches his own. He also seems to consider Gadget to be something of a surrogate daughter, most likely due to his long friendship with her late father. Due to his traveling experience, Monty often handles the traveling arrangements for the group
According to the Disney Encyclopedia, the character was voiced by Jim Cummings. However, the character is also listed in the voice credits of Peter Cullen. Cullen actually originated the role in the early episodes of the show, with Cummings (who had already been voicing Fat Cat, Professor Nimnul, and other characters on the show) taking over the role in later episodes. In Japanese, he is voiced by the late Eken Mine.