Hell Crawler
From DALpedia
A creature created by demons, which are used to torture souls in Hell. They appear as a red semi-translucent human skeleton, but rather then arms, they have another set of legs and walk on all fours.
In order to kill on they must be fully vaporized with a powerful spell. A simple blast or a physical attack will only cause it to shatter and the pieces will form into several other Hell Crawlers.
These things first appeared near the end of Chapter 8 summoned by Valos to attack Zeros', Duilin and Rink.