Shlurp

Shlurps are purple caterpillar-like enemies in the Wii game Super Paper Mario, living in Gloam Valley and in the Flipside Pit of 100 Trials in rooms 13 and 15. These strange creatures are almost invincible thanks to their extremely hard exoskeleton. Despite having lots of legs, they move very slowly, and keep going in the same direction, even when they hit a wall, which highlights their placid temper. Shlurps suck up and swallow anything they find in their way. Actually, if Mario gets too close to a Shlurp, it will suck him up and spit him out, thus damaging him. The only way to defeat these enemies is to get them to swallow an explosive, that is to say, Boomer.

There are tougher versions of these enemies, named Shlorps.

Trivia
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 * Like quite a few enemies from Super Paper Mario, Shlurps are possibly based on an enemy from the Legend of Zelda video game series. In this case, it may have been inspired by s, which, like Shlurps, are tough-skinned creatures that can only be destroyed by eating a bomb, in most cases.
 * Shlurp seem to be devoid of eyes, which would make them totally blind. This may explain their even-tempered behaviour as well as their slowness.