As with all veterans returning SSB4, Charizard's model features a more subdued color scheme. It more closely resembles its appearance in recent mainline Pokemon titles as a consequence. Additionally, the flame on its tail has a more stylized visual effect.
Charizard has two new taunts: one where it stands upright (similarly to Ridley's taunt), and another where it does a quick aerial flip and roars. They replace its previous down and side taunts, respectively.
As a member of Pokemon Trainer's party, Charizard uses the Trainer's stock icon and victory screen name call instead of having its own.
Charizard's voice clips have been changed.
Charizard's dash animation has it move in a wave-like motion, similar to Lugia on the title screen of Pokemon SoulSilver.
Universal 3-frame jumpsquat vastly improves Charizard's ground-to-air transitioning, as its previous jumpsquat lasted 7 frames.
Due to initial dashes being more standardized in Ultimate, Charizard's initial dash speed is noticeably higher (having previously been the slowest in the game, tied with Bowser's), improving its approach on the ground.
Charizard now hangs onto a ledge with one hand instead of two, making its head no longer peek above the edge while grabbing onto one. This gives Charizard more safety when ledge hanging.
Charizard moves its head in a less vulnerable position in many attacks, such as Forward Air, Down Smash, Standing Grab, and Ledge Hang.
Charizard's second mid-air jump now gives as much height as its first, improving its air game and recovery.
Charizard has a new Down Throw animation where it hovers a bit while flaming the opponent.
Down Throw has significantly more ending lag. However, the decrease in combo potential is offset by Charizard's faster jumpsquat.
Flare Blitz is significantly stronger and deals even more knockback and shield damage.
Flare Blitz has Charizard emit orange flames instead of a blue glow. Additionally, its flame effects are noticeably more intense.
Fly's hitboxes were increased in size, making the multiple hits connect more reliably.
Fly's knockback has been reduced significantly.
Pokemon Change can now be used in air and is much quicker, allowing the user to potentially combo into other Pokemon's moves, or choose the recovery move that suits their situation best. Like in Brawl, it also offers brief intangibility during the switch, giving it the functionality of a dodge, even in air.
If Pokemon Change is used repeatedly, it will grant no invincibility frames for a period of time. Pokemon Change also has a cooldown of around two seconds.
Now that is once again part of the Pokemon Trainer's rotation, Charizard's old down special, Rock Smash, has been replaced with Pokemon Change. While this reduces Charizard's own defensive capabilities, it allows it to instead change places with Squirtle, a faster character, to adapt to different situations.