Run for the Hills
Finally out of the concrete jungle, Donkey and Diddy meet face-to-face with the menacing boss of World 5. Wait, does it even have a face?! Dumb Drum has a solid supply of nasties to toss at you, but he's a bit on the slow side. Keep out of the way and let him do all the dirty work.
Dumb Drum starts the fight by slamming recklessly into the ground, then dispatches a few minions to do his dirty work for him. Once the foes are defeated, he'll add an extra drop to his routine and release a different type of enemy than before. Diddy can run away and get the job done, but this fight is better suited for our bulkier hero. If you time Donkey's jump so that he lands on the first enemy as soon as it touches the ground, you'll be able to bounce into the second as soon as it's released. Just make sure you don't get caught in the corner.