I'm trying to help move it back to K. Rool. It's hard for me to discuss K. Rool since I admittedly don't have the greatest amount of knowledge of how he fights outside of DK 64, though I am passingly familiar with people generally have his blunderbuss play a role in his movesets. I kind of like to picture him using it as a sort of derpy recovery attempt that is almost entirely vertical, and not very effective for recovery. Though he probably has better options.
Doesn't he have some bizarre flying apparatus of some sort?
King K. Rool has four main boss battles to draw moves from. The original three DKC battles and DK64.
In DKC1, K. Rool basically just runs, jumps, throws his crown, and drops cannonballs onto the screen. A lot of K. Rool's animations can be drawn from this game. He doesn't physically drop cannonballs, though, he hits the deck of the ship hard and cannonballs fall from the sky, but he can still incorporate the cannonballs into his moveset somewhat (although I do think its more likely that K. Rool would just fire cannonballs from his blunderbuss).
Speaking of the blunderbuss, that's K. Rool's main trait in DKC2. He's wearing a pirate getup and fires cannonballs, spiked cannonballs, and even gas. He sprays fire from the blunderbuss to move along the ground and also late in the battle teleports around and turns invisible.
In DKC3, electricity is the main quirk here. Both battlefields have orbs on the left and right side of the screen that shoot electricity across. In the first battle, there's only one set of orbs and half the battle the electricity covers the entire ground. K. Rool uses a small helicopter to fly around and you need to disable the helicopter with a steel barrel to knock him into the electricity. Before the electricity covers the ground you just need to hit him, though, no need for him to hit the electricity.
Would there be any way for a projectile game to make up for being a large and slow opponent with poor recovery? I'd like to think there totally is a way, but I'm no game developer.
I think so. K. Rool could probably have a variety of fast projectiles such as his crown, and his blunderbuss which can actually shoot incredibly fast. Plus, he'd probably have excellent recovery options if they go with the helicopter, and if you watched his DKC1 battle, K. Rool is NO slouch. He can run INCREDIBLY fast and has excellent jumping capabilities, too. He can actually run and move faster than any of the Kongs can in both DKC1 and DKC2, although his helicopter from DKC3 is a bit slow.
K. Rool's advantage is his extremely heavy weight makes knocking him back very slow. I also think he'd have a lot of armor like Little Mac has. Obviously, his disadvantage is that he's a very big target and can rack up damage quickly, but at the same time, I imagine he'd be able to take a lot more damage, too.
Let's make the discussion K. Rool-related here.
From here onward, it's pretty much a lock that K. Rool's thread will be the largest. That's certainly nothing to sneeze at.
Don't push it. We don't want K. Rool to get locked as well.