"Here come the Koopa Bros.!"
-The Koopa Bros.
The Koopa Bros. are a group of four Ninjakoopas. They appear as bosses in Paper Mario, being the main antagonists of Chapter 1, and overall the second boss fight of the game.
In chapter 1, The Koopa Bros. guard the Star Spirit, Eldstar. Mario encounters them at the end of chapter 1 in Paper Mario. After Mario and his pals defeat all four of them, they fall down their castle into one of the prison cells, seemingly leaving them trapped. Towards the end of the game, Mario encounters them again, only to see them be defeated by Jr. Troopa in mere seconds.
The Koopa Bros. are seen in the ending credits. They give the player a thumbs up before some Bob-ombs blow them up.
The Koopa Bros' main attack is jumping on top of each other and doing a special tornado spin, which has an attack of 4. Like other types of Koopas, they will not attack a full turn if flipped over on their shells. Their attack also decreases by 1 each time one of them is defeated.
This fight can be tricky if unprepared. However, it is relatively easy if the player knows what they are doing. The first thing that the player should do is to flip the Koopa Bros over onto their shells. The first hit will cause them to shake, while the second hit will flip them over. At this point, the player can do real damage to one of the Koopa Bros. Players should be cautious, as even if one of them is still flipped while the other gets back up, they can still perform a spin attack, so the player should make sure to flip each Koopa Bro on their back. If they flip back over, repeat this until all of the Koopa Bros. are defeated.
- The Koopa Bros. appear to be a reference to the Teenage Mutant Ninja Turtles, both are turtles and wear ninja masks, even wearing similar colors to the Ninja Turtles, such as the Black, Yellow, and Red Ninjakoopas very slightly resembling Leonardo, Michelangelo, and Raphael of the Teenage Mutant Ninja Turtles.