Heart Container

Heart Containers are a recovery item originating from The Legend of Zelda series that appear in every Super Smash Bros. series installment.

Background information
In The Legend of Zelda series, Heart Containers increase Link's maximum health by one unit. In The Legend of Zelda, they are scattered around Hyrule or acquired after defeating a dungeon boss. In Zelda II: The Adventure of Link, they can only be acquired in secret places for a health upgrade. In The Legend of Zelda: A Link to the Past and subsequent installments, like in The Legend of Zelda, Heart Containers are acquired by defeating a dungeon boss. Alternatively, one can be formed by collecting four Pieces of Heart (five in The Legend of Zelda: Twilight Princess) scattered in various area.

In the Super Smash Bros. series
Whenever a Heart Container appears, it drifts to the ground slowly. In Super Smash Bros., Heart Containers heal all damage, returning the fighter's damage level to 0%. Their design is taken from The Legend of Zelda: Ocarina of Time. In Super Smash Bros. Melee onward, however, the Heart Container's effect has been changed to only healing up to 100% of damage. However, the three Heart Containers seen in All-Star still recover all damage. In Super Smash Bros. Brawl, the design of the Heart Container has been changed so as to reflect their appearance in The Legend of Zelda: Twilight Princess, and in Super Smash Bros. for Nintendo 3DS / Wii U and Super Smash Bros. Ultimate, Heart Containers are designed after their appearance in The Legend of Zelda: Skyward Sword.

In Super Smash Bros. and Super Smash Bros. Melee, a Heart Container cannot be picked up until it touches the ground. In Super Smash Bros. Brawl and later installments, fighters can grab a Heart Container in mid-air.