I might be wrong but I think it's from a show called "Kirby right back at ya!"
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I remeber that show, I haven't seen any episodes in like years, but I wasn't completely sure if he got it from one of that show's episodes, or if it was from something different, you've got to admet that it was super funny.
It's not bad. Some hitbox errors, i notice that some of them dont hit unless your right next to them. I think you should try using the Brust Sonic Run animation. I noticed Knuckles feet dissappearing and then reappearing during the run, and i know that has to do with his figure 8 style running.
Love the dash attack.
The forward Smash and the down smash i also thought were really good.
The up smash i thought was kinda odd since he uses his head... I actually like the Pikachu one where he spins around and uppercuts them. Even though it was kinda slow it was incredibly powerful. But this is defintately something new.
the Side Tilt was good, but the hitboxes to me seemed kinda off, since it was really hard to hit Kirby.
The Up tilt is also good. but maybe just a tiny bit more knockback. Since he is suppose to be a powerful character.
The down tilt was cool. But maybe you should have him do a little jump and then he pounds the floor. Kinda something similar to how he does it in Sonic Heroes.
I think there are some problems to his Ball. idk it just seems weird for his jump and while he was on the ledge it appeared there too. so idk if your gonna fix it soon. XD just thought i'd point in out just in case.
All in all im so glad your gonna take up Knuckles.
you're doing a great job on him already!
Well it does say alpha, so he'll most likely fix it at some point. I think his main reason was to show how the animations were coming along, some of them were goos to me while others weren't, then again, I don't know anything about Knuckles attacks in other games and stuff, so I can't completely put my say in this. xD