Whomp King

The Whomp King is the boss in Throwback Galaxy. To access the fight, Mairo/Luigi must first go to the top of Throwback Galaxy and defeat the first Whomp (wait until it lands face-first, and ground pound the symbol on its back). Then, get into the hole to start the fight. Mario will land on a battlefield with a few gold spots for coins. The battlefield will shake, and the Whomp King will land on the battlefield. After he makes his entrance, he will say, "It makes me so mad! We build your houses, your castles. We pave your roads, and you still walk all over us. Do you ever say thank you? No! Well, you're not going to wipe your feet on me! I think I'll crush you just for fun! Do you have a problem with that? Just try to ground pound the Whomp King! Ha!

Then the fight begins, and the goal is the same for regular Whomps except that Mario must ground pound the symbol three times. The Whomp King also has some weapons he uses against you. The most obvious is landing face-first into the ground. Just like a Thwomp's pound, this is instant-kill. When he is about to land, he highlights the part he's going to be covering, making it easy for Mario to avoid it. When the Whomp King lands, he will create a shockwave. It does not hurt Mario, but it will stun him for a few seconds, and Mario will have less chance to ground pound. He will also summon mini-Whomps, which are not a huge threat, because the Whomp King will probably destroy them anyway.

After he is defeated, he will say, "No! Crushed again! I'm only a stepping stone after all. I won't gravel, er, grovel. OK, you win. Here-- take this with you!". He will say a quiet "Dang it", and the star will appear.

Trivia

 * The Whomp King is the only boss in the game (besides Bowser and Bowser Jr.) that talks before and/or after the fight.
 * If Mario/Luigi dies in the fight, and they return again, then the Whomp King will say, "It makes me so mad! We build your houses, your castles, your... Arrrgh! I'm tired of this speech!" and the fight will begin.