Thwomp

Thwomps (, Dossun) are enemies from the series.

Origin
Thwomps made their debut in  as a recurring enemy, and has become a recurring enemy in later Mario games. They are rock-like enemies known for their stone faces. They normally remain stationary in the air, but when they are approached by the player, they attack by falling on anyone attempting to pass underneath them. They are often found in castle levels and have a variety of subspecies such as s, es, and s.

As a moveset element
Thwomp appears as one of Kirby's possible Stone transformations, based on its blue design from Super Mario 64.

Trophy
The Thwomp trophy uses its main design from Super Mario Bros. 3.

As a moveset element
The Super Mario 64 Thwomp returns as one of Kirby's possible Stone transformations.

As a moveset element
Thwomp returns as one of Kirby's possible Stone transformations, based on its design from modern Mario games.

Trophy
The Thwomp trophy is exclusive to.

As a moveset element
The modern Mario Thwomp returns as one of Kirby's possible Stone transformations.

As an Assist Trophy
Thwomp debuts as an Assist Trophy. It was revealed during the Super Smash Bros. Ultimate Direct in November 1, 2018.

During the reveal trailer, Thwomp is first seen attacking and launching, who attacked using his Thwomp Stone transformation on the Garden of Hope stage. The Thwomp is next seen on the same stage at its center pitfall, falling and failing to damage as he crosses the gap, but succeeding in attacking.

As an Assist Trophy, Thwomp teleports near or above a nearby opponent. It hangs in the air and falls down when an opponent passes under it, falling through any soft platform beneath it and dealing 32% damage and 10 shield damage. Touching one at rest deals 7%. Unlike its game appearances, however, the Thwomp will teleport to a different part of the stage if left stationary. The Thwomp has a high jostle priority, making it very difficult to pass through without dodging. While Thwomp can't hurt its summoner, it will still push them out of the way and attacks will clang against it.

Training Mode describes the Thwomp Assist Trophy: ''Squishes opponents caught beneath it. Can't be KO'd.'' They cannot be summoned on the 3D Land, Big Blue, Dream Land GB, Great Plateau Tower, King of Fighters Stadium, Mario Bros., Mishima Dojo, Mushroomy Kingdom, Pac-Land, Rainbow Cruise, Summit, and Wrecking Crew stages.

Spirit
Thwomp also appears as an Advanced-class support spirit. It can be summoned using the cores of and.

Trivia

 * Despite Thwomps having a singular voice clip from Super Mario 64, which is reused throughout the Mario series, they remain mute in Super Smash Bros. Ultimate, possibly to reflect their appearance in the New Super Mario Bros. series, where they are consistently mute.
 * Thwomp's Assist Trophy reveal is very similar to 's fighter reveal. While was disguised as K. Rool, only to get smacked by him later, Kirby follows suit by using Stone to take the form of Thwomp, only to get hit by a real one.

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