In Super Smash Bros. for Nintendo 3DS/Wii U, Blast Burn is a custom move for Charizard, replacing Flare Blitz. When used, Charizard will briefly charge up before rushing at the opponent. When the move makes contact, it creates an explosion that sends the opponent flying. Charizard will take damage as it dashes and when it makes contact with a target.
In the anime
Mega Charizard X
The user is engulfed with flames and hits the ground with its fist, creating a fiery explosion.
Mega Charizard X's body becomes engulfed in light blue flames. It then punches the ground, sending a wave of energy into the earth which then moves underneath the opponent. The energy then bursts upwards in a giant explosion of red-orange flames.
Blaziken releases a powerful and massive stream of fire from its mouth at the opponent, or Blaziken holds out its arms and releases a powerful stream of fire from the fire around its wrists at the opponent.