Monty Mole

A surly mole that has appeared in a few Mario games. He has been seen in a few of the Mario side-scrolling games, including Super Mario World, where there are also giant-sized versions that one can stand on the heads of, allowing access across spikes and other obstacles. Monty Mole is also seen in the Mario Kart series, as an obstacle that you must manuever around in various courses. In general, they are annoyances rather than enemies.

Forever Stats
HP:111 Defense

Mario Superstar Baseball
Monty Mole also appeared in Mario Superstar Baseball as an unlockable character, who's oddly enough, on Mario's team. He has the ball dash ability.

New Super Mario Bros.
Monty mole appears in a minigame called "Whack-a-Monty" and appears again as the boss of World 6 castle as Monty Tank.

Mario & Luigi: Superstar Saga
Monty Mole appeared again in this game, only now he was yellow and sported a red bowtie in addition to the sunglasses in Paper Mario. He usually appears in out-of-the-way places and rewards the player with clothes, badges, or rare items.

Mario & Luigi: Partners In Time
Monty Moles appear in this game as well, but in the past. One is seen in the Gritzy Desert, and will impede the foursome's progress unless they can complete his challenge. Two more are seen in the underground of the Koopaseum and run an Item Shop. Deep in the Gritzy Caves, two more Monty Moles run two more challenges that must be completed.