From the Super Mario Wiki
Retrieved from "http://www.mariowiki.com/index.php?title=Wrackle&oldid=1867765"
Wrackles are the robotic defenders of the dragon god Wracktail, the boss of the Flipside Pit of 100 Trials in Super Paper Mario. They are identical to the Frackles encountered alongside Fracktail in the Yold Ruins, though they are colored purple, are much stronger and have the ability to shoot energy blasts at Mario and co. Touching the energy blasts does ten damage but touching the robot itself deals five damage.
Like Fracktail, the intended way to defeat Wracktail is to use Thoreau to pick up the Wrackles on his back and throw them at the dragon's antenna to damage it. However, if the player has Luigi in their party during the battle, a much easier way is to use his super jump to attack the antenna instead. The defeat of Wracktail leads to the Wrackles' destruction alongside their master.
Names in Other Languages