monty tank
A boss from the Mario Series, appearing in World 6 of New Super Mario Bros.. It is a Monty Mole driving a tank with Bullet Bill blasters. The player can defeat it by stomping on Monty's head three times, which is exposed when Monty comes out to throw Bob-ombs at them. The bob-ombs can be thrown back at the tank and when hit, it will fire Bullet Bills and gain one extra level. The tank is invincible when Monty's head is hidden.