Well well, lets see what do we have here..
Oops?.. You might wanna check the sprites format in case you have accidentally left one as Png, also you may need to shorten out some text.
Knuckles: This one is basically an upgrade to the vanilla, without making it too overpowered, its a fine balance i believe, its fair enough. I just dont understand what the C2 does.
I do like the fact it has better verticality, with the double jump thing, and the stomp to quickly return to ground. (I would personally would had added multiability like the SA2 Knux, with a recurl to return to glide after the double jump thing.)
Sonic: Rather standard, not much to highlight really, but not bad neither, its a sort of mix from SA1 and S3, because the Instashield and the bubble bounce.
The bounce is nice for reaching taller platforms that are still in view, yet far enough to not make it on a single jump.
The Double jump since it multiplies with momentum, it does make a fine verticallity option.
I love the fact you can "parry" with the instashield, thats convenient, i like it..
Tails: what to say from this one, this is the most lackluster from the 3 from the main cast.. its just Tails from SA2, thought its not bad neither.
Amy: uuu.. i like this one, you gave my girl some interesting stuff.
Wallclimbing is something she REALLY needed, considering her limited vanilla moveset.
The stomp sort off help getting back to ground, thought i would had gave her a way to fall slowly, like the helicopter ability or such.
The hammer bounce, i dont really sort off undrstand it that well, as you gotta bounce first. Yes, you can combo it with the spin ability to sortoff "bounce" like the 2.1 Amy could, but its more complicated than that, and theres not even half of the vertical momentum you had with the 2.1 one, it feels.. "weird" But seems hella promising, i love it.
SuperForm:
Knux: It doesnt really add nothing new really, could had at least buffed one of the abilities, althought i do like the custom song.. interesting pick, the glide sprites for running does give it some sense of power.
Sonic: This one is interesting, Reveries flight, thanks you! this is a must have for super sonic, i swear, i hate the hover thing, its so unconvenient most of the times and doesnt really make it worth the hassle of collecting them.
I do love the flight sprites, makes it look powerful, and the super song really adds feeling to it.
Tails: the song choice feels.. odd, idk how to describe it, also, you maybe wanna give him infinite flight for his super form, it really doesnt add nothing than just a jump and speed boost from the vanilla effects. Thought the sprite for running looks cute, i love it.
Amy: Jesus, we going hyper now?? thats, uh, interesting.. The song is a cool pick, its not edgy nor too "childish", i like it, althought her abilities dont change much neither, maybe give her a way to bounce like the 2.1 Amy when super? that would be cool
OVERALL OPINION:
Eh, not bad, it has some really good potential if polished properly, it does have the right ideas, just not executed properly entirely, it does make for a good optional addition in servers when you wanna change up the pace and have something different than the same 5 characters from always, so id really recommend it