 SCP-150 is an obligate parasite that resembles the tongue-eating Laos. Upon contact with a human subject, SCP-150 embeds itself deeply in the flesh of its host. Over the course of approximately seven days, the parasite will burrow into the host and affect numerous physiological alterations. The most glaring alteration is the gradual conversion of the limb nearest the infection site into a chitinous appendage. As SCP-150 consumes the host's flesh, it excretes tissue that replaces and augments the functionality of the host's limb without causing transplant rejection.