Kirby gets this ability when he inhales an enemy that constantly radiates heat around itself, the most common being Flamer. When the ability is used, Kirby is wrapped in a coat of flames and then charges forward at super speed, burning any enemy he goes through. It is able to light fuses, and in all games (except for Kirby Super Star/Kirby Super Star Ultra), it can break through Metal Blocks.
In Super Smash Bros. Melee, Burning appears as Kirby's dash attack turning him into a fireball as he plows though his foes. Unlike the original game incarnations, the attack cannot fly through the air as Kirby will begin to fall should he dash attack toward and over a ledge. This attack was replaced with Yo-yo's Break Spin attack in Super Smash Bros. Brawl.
Since Kirby's Adventure, Burning appears in every platformer Kirby game (with the exception of Kirby's Epic Yarn and Kirby Mass Attack, both of which did not feature copy abilities), even when it is an additional attack in the Fire ability's moveset; it is Fire Kirby's dash attack in most games.
In Super Smash Bros. Brawl, the trophy for Fire Kirby erroneously states that it appeared in Kirby: Canvas Curse, when it was actually Burning that appeared.