The boss is bowser.
Monty Tank
Beat the boss as a mini person
You have to have (or be in) mini Mario form and kill the boss in world 5.
go to the 5th world and beat the boss as mini Mario
if you mean ds,beat world 2's boss as super mini mario.
beat the boss with mega mushroom
its a lakitu with a gray cloud that shoots lightning
defeat the boss from world 2 and 5 with mini Mario
you just jump on his head....whenever he isn't in his shell........
will there be a new super Mario brothers movie
this is if you mean new super Mario bros you get a mini mushroom and do the boss with the mini mushroom in world 2 and 5
You can find a Pokey Mummy in World 2 as it's the boss.