ITT: We come up with names for each of Charizard's moves.

[Knee Smasher]

Jab: Fury Cutter
Ftilt: Tail Slap
Utilt: Steel Wing
Dtilt: Headbutt
Fsmash: Head Smash (doesn't learn it, I know, but come on)
Usmash: Wing Attack
Dsmash: Earthquake
Dash Attack: Mega Kick
Nair: Acrobatics
Fair: Dragon Claw
Uair: Iron Head
Bair: Dragon Tail
Dair: Stomp (doesn't learn it, I know, but come on)
Pummel: Bite
Fthrow: Fling
Uthrow: Seismic Toss
Bthrow: Return
Dthrow: Incinerate
B: Flamethrower (official)
Forward B: Flare Blitz( official)
Up B: Fly (official)
Down B: Rock Smash (official)
A as Mega Charizard X: Dragon Rush (the difference in power between this and Charizard's Dragon Rush custom can be explained by Mega Charizard X's Dragon typing, Tough Claws, and much higher Attack)
B as Mega Charizard X: Fire Blast

Any ideas for Ftilt and Utilt? Feel free to post your own names for other moves as well.

 

[Leety]

F-tilt: Tail whip

Up-Tilt: Either Air Slash or Aerial Ace

 

[Swamp Sensei]

I call his B-Air the "Get rekt son."

 

[charizardbro]

I think ftilt should be tail slap. It's not multihit but I think it makes a little more sense than tail whip which doesn't deal damage.

Nair could also be rollout depending on how you look at it.

I think utilt should be steel wing.

I think jab 1-3 could also just be fury cutter.

I also nominate iron head for Uair.

 

[Knee Smasher]

OK, I made all your suggested changes with the exception of Rollout, charizardbro, since Charizard learns Acrobatics but not Rollout.

 

[Davregis]

Nair as Fire Spin? As a bonus, it's his combo move...

 

[ZephyrZ]

Nair: Aerial Ace, because it's so fast and easy to hit with.
I don't like Fire Spin, because it's not exactly a "vortex of flames", and 'Zard can't learn Acrobatics, strangely.

Let's change his Dash Attack to Strength and his Dair to Mega Kick.

 

[KuroganeHammer]

uthrow: the bad one

 

[Steeler]

Zard can learn Acrobatics through a specially distributed Japanese Charmander lol