Mr. Thwomp
Mr. Thwomp is a male Thwomp in the game Mario & Luigi: Partners in Time. He is married to Mrs. Thwomp, and unlike her is very calm. He lives in Thwomp Volcano.
In the game, when Mario, Luigi, Baby Mario and Baby Luigi come the volcano erupts. Thanks to E. Gadd's help they put the fire out. However, the Thwomp couple waited each year for the volcano to erupt, but since Mario and Luigi stopped the eruption Mr. Thwomp became depressed, despite his wife's attempts to cheer him up. When Mario, Luigi and the babies came, Mrs. Thwomp got angry and fought the brothers.
After she was defeated, Mr. Thwomp got angry at the quartet for defeating her. However, after explaining their story, Mr. Thwomp offered to take Mario and company into Thwomp Caverns.