Mwa mwa mwa! here I come to give another earful of comments, bugs (if I found some) and suggestions!
Characters I used:
Sonic
Samus
Goku
Cloud
Zero
mario
Kirby
Samus: As far as I can tell she was probably the imbaest of them all, cause the phaser beam was overly super effective and that missile thing was more barragy than I anticipated. The charge shot failed to work on every occasion I used it...she'd charge up...then nothing would happen. -.- The zero lazer although a good enough charge time and a legendary look to it was imba beyond comprehension cause I one moved Jenova and Sephiroth along with the four weapons (Diamond, ruby, emerald and ultimate) without fail...but I think ultimate survived but only on a mm of HP in which case I just speed boosted him or gave him the missiles and it died a horrible cheap death... As for the speed booster I was expecting it to kinda be like mario's starman and allow her to run back and forth fastly and deal small amounts of damage each time I ran though them... As for appearances I was hoping for a charging animation like what was done for the Kamehameha except instead it just came out after about 5 seconds and made my jaw drop the first time I used it. But other than that it obviously served it's purpose to completely obliterate bosses flawlessly...
Goku: I had a couple of sweatdrops coming down when I first used his moves... The spirit bomb charges up to be roughly the size of the screen and explodes like it's suppose to...and if in a CG animation probably taking out half the damn planet at the sametime at full charge -.- cause that explosion made the ground shoot up and cover the screen in white for nearly 5 or more secs... And I like the way you can release it early if you have too which is good. Kamehameha was practically a toned down Zero lazer with the charge up animation, because althought only a fraction of the damage it was a good thing to use. Kaoken and super saiyan worked fine to my knowledge, dragon fist and everything on his was neatly done so I got no more input for him.
Sonic: ...Summed up in one sentence...just like on brawl when he goes super sonic... "I'M TOO CHEAP!" lol.... it's good that way though, but I half expected him to be able to fly and have some sort of perma-immolation which allowed him to run through enemies and deal damage rather than have a machinegun speed punch which hit them like 10 times a second for chaos damage... So could I suggest you make him a fake flyer? AKA you make him airborne except he can't really fly over walls and such (if that's even possible) and make him move faster and be able to deal damage on touch rather than comboing them to oblivion with super fast chaos attack damage. The Divine armor also comes in handy while you've got Sigma's S-blade cause they can't hurt you while you're easily stealing their HP. The "Continue?!" Power comes back infinitely cheap when fully upgraded and the spin dash looks awesome and deals imba enough damage when upgraded and even in early stages. The Tornado was fine but perhaps make it stun for longer each time so you can keep things at bay with it. The "somersault" was disappointing cause he didn't even jump, but I'm guessing that it was cause there wasn't enough animations but it served it's purpose once again.
Kirby: Kirby was fun to use with his inhale power and such. I was hoping final cutter would make him jump atleast to make it really look final cutter like...but he didn't.
Hammer was good except the fact it puts them on fire and sometimes doesn't stun them (if thats what it's suppose to do).
Rockform... I was thinking this would kinda be like a gargoyle rockform which gives him massively extra armor and just allows him to sit there for sometime to recover his HP for a bit (not too long thought or it'd be easily spammed up) but it worked well the way it was because I regained some HP when I came out of it eventually.
Inhale came through super effectively with me eating the bosses to finish them, and practically all the other times I was completely massed giving me a heap of stat bonuses and I think it should stay that way, but I was hoping that he'd have a standard power which is a bit like the devour attack because that's rather kirby like, and if the unit dies he swallows it and gains a bit of HP back. Or better yet if you eat an enemy in that way you can copy a power from them if they've got any. EG, maybe if you eat a theif or brigand you can get a steal power of some sort where you take money or random items out of them. Just a little something to make it more kirby sounding... and obviously if you want to eat a different enemy you can click a button and he'll lose the power... And I won't comment on warpstar except the fact it lacked the explosion for where he comes down with the star and it's a little overly big of a splash radius for my liking. Could I suggest using the Dragoon? XD if that would be possible to recreate using the models you have at your disposal.
Mario: He was rather well rounded except like I see most of the time with prolonged missiles barrage style moves after a certain point in time it just ceases to deal damage anymore...is this cause there is a max damage it can deal or that there's a duration of the damage like the original one? I was also wanting to suggest that this be like mario's final smash from brawl? the mario finale which would work like a shockwave or beam and fly through the enemies dealing burn damage overtime.
Jump attack would miss if the enemy ran off, in which case they would cause it makes you invulnerable till you come down...
Fireball came in handy but what's the range of it? cause whenever I tried to use it he'd have to go up in their face to use it.
Starman was super effective for taking out a massive load of enemies at once, and I never got to using super mushy cause I'm just guessing it's like using avatar cause the icon was unchanged and that's the way it sounded to go anyways.
Zero: Zero was rather well rounded, with the rising slash being fun to use, charge attack being a nice finisher (except the fact Omega Zero finished ME with it on occasion aswell -.-) because of it's huge damage.
The buster became a somewhat spam fest once my MP raised fast enough cause it's fly through a heap dealing damage to all of them. What I hoped it to be was a long range projectile move like mario's fireballs which you could use from longrange rather than a tiny bullet shot thing which would fly through numerous targets and when later upgraded high enough, killing most of them off.
Ultimate form was good, because to attack speed bonus was exactly what you needed to pwn the bosses, except may I suggest giving him some extra special effect attachments while like that to make him look a little different?
Cloud: Braver came nicely and I got nothing to add to it.
Cross slash... Was that meant to blank out the screen so I can't see anything while using it, or is that a glitch?
Meteor rain was good except maybe make it a small radius but more damage.
Omnislash was a bit dodgy... Although the teleporting worked on most occasions it would hardly deal enough damage to make a difference, or in that cause not deal damage at all seemingly and unlike the real omni-slash there were hardly any hits to it. so perhaps look into that...
The Stage and other suggestions:
something I always find a hassle with this is that there are never enough inventory slots! so I want to suggest that you'd have some sort of mini inventory like on some of the final fantasy RPGs. You'd have like a little room with a couple of boxes or something were you can store surplus items.
I also noticed that in the stage there was hardly any things to increase you MP if you were running on bugger all. So may I suggest having a type of mushroom or random drop so that you can have MP power-ups on the field aswell?
The Terrain was fine, althought I never had the patience to play through the whole thing cause I wanted to test some favourite characters...
Character suggestions:
Maybe I suggest adding Metaknight in? There's a model somewhere of him that I've seen... As far as moves go, I'd say one of them would have to be dimension cape which would allow him to teleport to a point nearby (not overwalls or boundaries) and do an small area of effect slash. Another could be an airstrike from the Halberd perhaps? His ultimate would have to galaxia darkness though, I've got no doubt about it. which would probably make him invulnerable before he capes an enemy it fades out to black before the screen goes white a slash goes through it and enemies around the initial target take big damage while the target takes MASSIVE damage...and observe my emphasis of massive.

Or perhaps someone from fire emblem like marth etc if there's a model present somewhere for any of them. but at any rate I've waffled enough (about half hour to type this so that's more than enough) thanks for listening.... if you do. -.-