“Now you go SQUISH!”
Mrs. Thwomp is a female Thwomp in Mario & Luigi: Partners in Time and one of the bosses of the game. She is married to Mr. Thwomp. She is very easily angered. She lives in Thwomp Volcano. Unlike all other Thwomps, she is shaped as a boulder and has arms. She is also the first explicitly female Thwomp. Her battle style is similar to Trunkle, a boss from Mario & Luigi: Superstar Saga.
In the game, when Mario, Luigi, Baby Mario and Baby Luigi come to the volcano, the volcano erupts. With E. Gadd's help, they are able to put the fire out. Mr. and Mrs. Thwomp, however, wait each year for the volcano to erupt immediately, but when Mario and Luigi stop the eruption, they are upset. As the brothers make their way to the summit, Mrs. Thwomp, frustrated, decides to battle them. During the battle, she uses an attack, splitting her into four small versions of herself, but it is revealed that some Micro Goombas help her as decoys when she shrinks. They have slightly imperfect disguises, however, which the player can use as a clue to which to attack.
After being defeated, Mrs. Thwomp gets angrier, but her husband attempts to calm her down. Afterward, Mr. Thwomp offers to take the brothers into Thwomp Caverns. She then asks to come along, but Mr. Thwomp, knowing she would flatten them, says no. She became so angry that she knocks them into the volcano.
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