Jab
It's perfectly balanced and animated nicely. However, I feel that he should be slightly more hunched over when punching. It'll make it much easier to connect with small characters. I could only ever hit the taller or heavyweight fighters.
D-Tilt
Really no complaints, animation is great and it's a good melee attack for hitting smaller opponents. In other words, it kinda makes up for the complaint I had about the jab.
Dash Attack
Great animation and very balanced. Nothing else to say, really.
D-Smash
I don't find myself using this move very much, as it's hitbox is much too small. As it does come from DK64's K. Rool fight, I'd expect it to have that big shockwave like in that game. Maybe you could borrow some code from Wario's PM D-Smash or Charizard's D-Smash (but he doesn't open up in PSA, I believe). Fantastic animation, though.
U-Air
I really like this move, it's seems to be a great follow-up for his D-Throw. Sweetspotting with this move is so, so very satisfying. :3
B-Air
Really great animation, and one of K. Rool's best kill options. Similarly to U-Air, it follows up after U-Throw very easily. I don't consider it OP, though, because I haven't really found many other good kill moves with K. Rool.
Grab
I only mention this as a move because I have one issue: His grab range is awful. It's like Ness' in Melee. However, I think this really isn't much of a bad thing. Every character has advantages and disadvantages. This is just one of K. Rool's.
F-Throw
I really like the animation, love how he kicks em'.
Nothing else to say, really.
B-Throw
My favorite throw, animation-wise. I love the detail of him covering his eye all like "oh, that's gotta hurt!" XD
U-Throw
My favorite throw, attack-wise. Very great for combo starting.
D-Throw
Couldn't find many follow-ups, but does great damage, if I remember correctly.
Now, here's the really fun part! SPECIALS!!
Neutral Special
Ah, one of my favorite attacks. However, the first thing I wanna say is this: When he's "charging", it never seems to do any more damage or knockback than if you just tapped the button once. What's the purpose? Anyway, I love the animation, very well done. My only nitpick is that he doesn't seem to have much of a reaction when his blunderbuss explodes. He just kinda puts it back away. I would like to see him do that cartoony thing like in DKC2 where he freezes for a couple frames, then he could put away the blunderbuss.
Side Special
My favorite move in his entire moveset (mostly just because of nostalgia X3), the Krown Toss! It works really well, and is a great kill option. I only have one complaint though: His animation is a bit too robotic IMO. I would like for him to turn his head more to the side in a more jerky manner, and open his mouth a little more (and yes, I realize that you probably didn't open his mouth as much because it would overlap into his shoulder). However, I think you could make it work. Just stretch his head in that direction a bit to give him more room to open his mouth.
Down Special
I actually really like this move. The grounded version's animation is identical to the DKC1 animation. however, my one issue is with that fact that he goes into his, uh what do you call that...? Landing damage pose? ...Whatever, THAT thing. Because of that, whenever I do a get-up attack or roll, whatever, I get a messed up Pit animation. I know that you haven't made any yet, but it's still an issue right now. Also, aerial version is perfect. Nothing much else to say.
Soooo yeah! That's my feedback. I've really enjoyed you're PSA, and don't take any of my "complaints" or "issues" personally. They're just nitpicks. OH, wait... I just remembered one thing: His second jump. You never changed the ability for K. Rool to turn while using that jump, just so you know. Which is something that only characters with multiple jumps can do.
Really though, that's all.