Dark Sproing-Oings are tougher versions of Sproing-Oings, Boing-Oings, and Zoing-Oings in Super Paper Mario found in the Flopside Pit of 100 Trials. Surprisingly, they are only found after level 30, even though they are easy compared to some of the things that are found before them. Just like with their light counterparts, if you do not do enough damage to them, they will split into 3 Mini-Oings which each have 1 hp and do 1 hp of damage.