Dark Koopatrol

Dark Koopatrols are the strongest type of Koopa in Paper Mario: The Thousand-Year Door. Dark Koopatrols are purple versions of the Koopatrols, and are one of the most powerful enemies in the game. These elite Koopa soldiers wear a spiky metallic helmet, so as not to be jumped on by Mario, and also have intimidating spikes on their shell. Much like the Dark Craw, the first Dark Koopatrol encountered, named the Koopinator, is found in the Glitz Pit. He is the last fighter Mario must defeat before his battle with Rawk Hawk. Dark Koopatrols attack by charging at Mario and his partners, or by using a move similar to Power Shell. Unlike the regular Koopatrols, they are unable to call in reinforcements. They can even increase their Offense by charging their attack by +5. The one weakness they have is that they can be flipped onto their shells like normal koopas through the use of an earthquake attack or Mario's jump if he's wearing the Spike Shield badge.

Not counting bosses, Dark Koopatrols have the highest amount of HP in the game.

Trivia

 * Although the Log states Dark Koopatrols are elite members of the Koopa Troop, Mario has yet to have encountered any Dark Koopatrols that are actually affiliated with Bowser's army.