Alright, so in the 6th World of the Original SMB, Blooper is the one who got turned into Bowser, but how am i going to make Blooper a Boss if my World 6 is the Sky World?

Like Rexeljet said, Limitations breeds Creativity!

So, in World 3 of my game you would explode a Ghost House-type stage, which this time - just like in NSMBU - is a Sunken Haunted Shipwreck. However at the end of the stage, you'd see a short little cutscene of a bunch of Hammer Bros swimming into the Ship's Exit.

At the end of World 6, a huge Airship would appear as the World's "Castle" Level! But the rebuilt shipwreck accidentaly left a centrain... tenant on board...

So how do we defeat Captain Bloop?

Each of his Tentacles has a different attack. Left canon Launches Bob-Ombs, right canon launches Bullet Bills, the second left throws Cheep Cheeps at you, and the hook pulls a handle which activates a huge sterring wheel rolling in your direction. You can't jump over it, however there's a broken safe spot to duck under.

After all of these attacks in a randomized order, he slams his head onto the floor, which gives you a chance to jump on it.

The Super Boss Rush Variant is a Zombie. Now you can't stomp the Cheep Cheeps he throws at you, Bob-Ombs explode on impact and Bullet Bills track you down, and there's a new attack for the second left tentacle - it squirts some ink on your screen, which doesn't last long but still.