Just here to say a little about
aerials. I know he's a bad character, but for the most part I'd say it's not because of his moveset. His Bair and Dair are definitely his worse aerials (mainly due to having >30 frames of landing lag and not autocancelling for >40 frames), but they have their applications.
The thing about Bair is that it's a massive disjointed hitbox that kills people. It's pretty much a smash attack in terms of its frame data, but as an aerial you can retreat while using it; it can at least autocancel out of a fullhop, and the ability to turn around in a mid-air jump gives it a reasonable amount of utility, since it's pretty much impossible to challenge with an attack, it's that big and disjointed (you can sweetspot a Wii Fit out of Jumbo Hoop without getting hit, as an example). It's a really strong punish tool in general; baiting moves and dodging with an extra jump into Bair is one of Charizard's few valid landing options.
Charizard's Dair is one of the strongest meteors in the game at 14% with 20 BKB/100 KBG, meaning if you actually land the move off-stage there's a really high chance they're dead. A key characteristic of the Dair is that the meteor hitbox is actually gigantic and extends a decent way up Charizard's body, because it
doesn't have a sourspot; any hit during frames 18-20 sends the opponent straight down, the weaker non-meteor hitbox simply comes afterwards. The move is extremely useful against characters with predictable/no hitboxes on recovery. If they so much as clip their toes into your torso from above during those three magical frames, they're thrown deep into the abyss like goddamn the move is cheesy sometimes.
All that said, I probably don't know enough about most characters' Bairs and Dairs to rank them against Charizard's, but they'd probably be up there if not for the ridiculous amounts of lag on them. Really, a lot of Charizard's moves can be summed up the same way: "It's pretty laggy, but
have you seen the hitbox on it?"