Thwomp are enemies that appear in the Mario series of games. They try to hit the player by smashing them.
Thwomps appear in Flappy Swooper as obstacles in Tricky and Story Mode. They try to crush Swooper by falling down on him.
Thwomps appear in Super Mario Adventure as rare enemies. They only appear in a few castle levels.
Thwomps were put in airships, and towers. But rarely did they appear in the Koopaling Nightmare Towers.