Whomp 'Em happened in 1991.
Whomp 'Em was created in 1991.
Whomp That Sucker was created in 1981-07.
idc
Dodge 'Em happened in 1980.
Squish 'em happened in 1983.
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Break 'Em All happened in 2005.
Rack 'Em Up happened in 1987.
Rock 'Em Sock 'Em Robots - video game - happened in 2006.
Yes. They could leave rainbow trails everywhere and spread love and joy to all living things. Too bad they died with the dinosaurs when that Big Bang struck. To the people who don't believe in unicorns: Narwhals exist, so why not unicorns? WHOMP. WHOMP. WHOMP.
You can't.
One place you can fight whomps is in a level called Whomp's Fortress. It is on ground level, and it is on the right side of the stairs. It has a 3 and a star on it.