Think this’ll be the last one for tonight. The villainous XIII.
Here’s a couple of neato factoids about this character, since he seems to be quite the favorite with a few people. While XIII’s origins are shrouded in mystery, it’s no secret that he is the genius behind the company Darklife & Co.’s aura transfusion, which strips a person of their aura core, which naturally generate’s a person’s aura. This allows them to be infused with Darklife, an artificial aura source that is more potent than natural aura. Of course, this supply is a temporary, non-regenerating source that must be replenished. Darklife can cause withdrawal symptoms, creating junkies, as well as having a chance of adverse mutation, rejection by the host body, aura burnout, and other terrible side effects.
In regards to XIII himself, it’s said that his grand scheme somehow involves harnessing the power of the stripped aura cores for himself. His name (pronounced “Thirteen”) is rumored to be a tally of the number of “souls” or aura cores he has consumed. His body is almost corpse like, and there is speculation that perhaps his body has become so mangled by foreign aura consumption (see above with Darklife) that he might have actually died - and that consuming auras is the only thing keeping him “alive.”