Buried
Buried is a state in Super Smash Bros. Melee, Super Smash Bros. Brawl, Super Smash Bros. 4, and Super Smash Bros. Ultimate that characters enter when hit by an attack that induces the bury status, including Headbutt, Magnitude from Togepi, Villager's down smash or a Pitfall. In this state, controls are disabled until it wears off, this point being where the once buried character will get some invincibility frames. While buried, the character cannot be grabbed. Like other status effects, button mashing reduces its duration.
The amount of time a character remains buried is dependent on that character's damage percentage; the higher the number, the longer they will be stuck to the ground.
Characters can only be buried if standing on the ground; otherwise, they will simply take knockback as usual. Many moves with the bury effect meteor smash airborne opponents.
In Melee, buried characters cannot be "unburied" by getting hit; they will remain stuck in the ground until the effect wears off or the ground disappears. From Brawl onward, a character hit by a move that deals more than 100 units of knockback will be relieved of the bury effect, and be launched as usual. In Brawl, the amount of knockback taken does not get reduced, allowing for reliable, early KO setups on buried characters. However, in Smash 4, it is equal to 0.7x of the knockback that would have been inflicted otherwise, drastically weakening the effectiveness of such setups.
Notably, in Ultimate, most characters have had their buried poses altered. Attacks performed without unburying the opponent retain their properties when the effect wears off, including neutral attacks and meteor smashes.
Gallery
Luigi buried in Super Smash Bros. for Wii U.
Characters buried by Shovel Knight in Ultimate.