Mario Paint | Magolor Medley - Kirby's Return to Dream Land

It's finally done for real this time! I teased it back in April (I kinda wanted an excuse to do an April Fools video and figured something like this would bait people in) and I'm finally finishing it. This piece was actually brought to my attention way back when Return to Dream Land originally came out. This piece was originally made for the Soundtrack CD and consists of different themes associated with Magolor being revealed as the game's main antagonist. However, I didn't feel like the old Mario Paint Composer could handle such as task, but now I finally did it. My original intent for this was go get it done at 2000 subs, but work got the better of me and there were days where I didn't feel like doing anything, but I somehow managed to pull through doing whatever I could with what motivation I had at the time. Then, my next intent was to upload this at 2500 subs, but you've all waited long enough to hear this in Mario Paint. So I can say with complete relief that it's finally finished and I hope it was worth the wait for some of you guys!
As an added bonus, I've scattered a few other Kirby series boss themes in this piece. Can you name them all?