Charizard kill percents
All moves tested on Mario from middle of FD

Jabs and tilts

Jab1- never
Jab2 - 725% -- Stops Connecting to Jab3 at 105%
Jab3 - 217%
Dash Attack (Sweetspot) - 188%
Dash Attack (Sourspot) - 304%
Down Tilt - 88%
All Forward Tilts (Sweetspot) - 80%
All Forward Tilts (Sourspot) - 118%
Up Tilt - 87%

Smashes

Forward Smash (Both Hits) - 67%
Forward Smash (Second Only) - 65%
Up Smash (Both Hits) - 99%
Up Smash (Second Only) - 106%
Down Smash (Sourspot)- 96%
Down Smash (Sweetspot) - Never; impales opponents.

Aerials

Neutral Air (Sweetspot) - 88%
Neutral Air (Sourspot) - 145%
Forward Air (First Only) - 129% -- The more that hit, the higher it takes.
Up Air (Sweetspot) - 135%
Up Air (Sourspot) - 186%
Down Air - 111%
Back Air (Both Hits) - 94%
Back Air (Last Only) - 100%
Glide - 73%

Specials

Flamethrower - never -- Note: Has actual Knockback Growth; just not enough to kill at 999%
Grounded Rock Smash - 98%
Aerial Rock Smash - 97%
Stealth Rock - 898%
Switch - never
Grounded Fly (All Hits) - 101%
Grounded Fly (Last Hit Only) - Unable to Test
Aerial Fly (All Hits) - 107%
Aerial Fly (Last Hit Only) - 143%

Throws

Down Throw - 95%
Forward Throw - 168%
Back Throw - 192%
Up Throw - 158%

Get-Ups

Ledge (Under 100) - never
Ledge (Above 100) - never
Faceplant (Back Hit) - 328%
Faceplant (Front Hit) - 336%
Fratpall (Back Hit) - 334%
Fratpall (Front Hit) - 337%