User blog comment:Xilinoc/Ch. 633 - FRIEND 3/@comment-24531362-20150702203705/@comment-24531362-20150703075501

Regarding said bonetization, it's been theorized that Rob's Schrift is The Necromancy or something like that, and that either he's immortal, was dead all along, or was somehow inhabiting the body we know as Accutrone.