Jitterbone Contortionist

Aptly named jitterbones, halfling mortics are capable of controlling the density and rigidity of their skeletal structure. When relaxed, they have elongated, rubbery limbs. When they harden their bones, they become difficult to harm and bony spikes jut from their flesh.

Mortics are humanoids overwhelmed by void energy who tenaciously cling to life, straddling the line between living and dead.