READ THIS FIRST
I figured that we need more MU charts out there, so, I decided to start a Kirby a MU chart.
Because I am no where near pro, this MU chart might suck... And I don't mean Inhale. So, because of that, this will be an "interactive" MU chart as discussion from you guys will be key in it actually making sense, without further ado:

MU CHART
*Left Side represents Kirby*
Explanations might be added later

Horrible MUs (If Kirby has less than 30):

30-70

30-70

30-70

30-70

30-70 (Joey's Rating)

30-70, possibly a very tiny bit less

Bad MUs (31-49):

35-65

35-65

35-65

40-60

40-60 (Joey/Appley's Rating)

40-60

Even MUs (49, 50, 51):

50-50
Well duh

50-50

Good MUs (52-69):

55-45

55-45 (Common/DSwift's Rating)

55-45

55-45

60-40


Great MUs (70+):

70-30



Need Further Looking Into (AKA I have no idea/Never Played it):
Red means that it might change, and I need more confirmation
Even unless I just suck against him
Probably horrible
Not sure if it's even or a little bad
CHAUNCH/LITE HELP
Probably bad
Might be around 40-60 imo
Maybe even
Probably bad
CHAOS0/REM HELP
Probably good or even

Not Ranked

>the right side represents Kirby
> 15 - 85
Ok.

nooooooooo

I'm telling you guys

Falcon beats Kirby

nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

vs. - I have no idea. No one well skilled uses this character. I don't think Kirby wins, all I know is Bair can out-range much of MK's approaches if timed right.

vs. - Probably closer to 45/55 or 40/60. It's not that bad for Kirby. Neutral is tough and you must be careful with spacing his laggy moves. But he can still go far off-stage to punish Black Mage's recovery.

vs. - Definitely 30/70. She can play the MU being just as camp heavy as Marth.

vs. - At least 30/70 and possibly worse. For real, this is probably even worst than Marth. Not only can't you challenge his aerials for their fast and huge range, but you're not safe at mid/far in neutral either because of Lasers and his 1/3 stage length grab. If Chibi camps, Kirby can't get into to punish. He's just too slow.

vs. - It's definitely close, got to be between 40/60 to 50/50, because of how super hard both characters can punish each other.

vs. - This is a hard one to judge. On paper, Fox should win because of better tools, mobility, etc. But in-game, Kirby has Dthrow chase, Up-Smash chain into itself & Hammer. Kirby is also one of the few characters that can actually beat out Fox's aerial, so he can't approach without precise spacing to avoid punishment. And Fox can be pushed off-stage easily to ledge-guard him with your multi-jump. And every Fox player says how much they hate playing against Kirbys. I'll take there word for it and say Kirby probably wins because he' is pretty good at neutralizing everything that makes Fox what he is. 55/45 or possibly 60/40.

vs. - 40/60, Kirby definitely loses to a Falcon that plays safe neutral and he can kill Kirby ridiculously early. Yolo Falcon Punch is also dumb and un-punishable.

vs. - It's got to be 35/65 or worst. Everything Pikachu has kills Kirby at 60%. Tilts that harasses Kirby in neutral. Mobility that can't be caught. Guaranteed setups into kill off of throws.

vs. - Explain please.

I'll discuss more later.

The consulted rating for Sora:Kirby is 55:45, which is exactly the same as my rating, but that's our agreed upon rating.

Updated



(Added in my update)

I maintain that a patient (read: annoying) Sheik can gain the edge over Kirby. Kirby has no great ways of challenging dash attack, bair, or needles, and Sheik has limited grab combos at low percents which make a big difference.

Very true.

Not really, the fact that Jiggs forces Fox in melee to play very laser-campy heavy doesn't make it a good mu for Jiggs.
I know jiggs does decent against jiggs however so i can see why kirby has the edge however.