One of Grav's "students", and "head of acquisitions".
Bock is one of the two more trusted “students” that Grav has. As his “head of acquisitions”, Bock goes with scavenging crews to pick up the more esoteric things that Grav wants for his studies. Bock had a working relationship with Grandfather before he died, acting to moderate his boss’s eccentricity. Bock still works with Leon on acquiring and identifying things for Grav.