|Thornelius Archimedes III|
|Created By:||Possibly Katharine|
|Species:||Unknown. Possibly a variety of acacia.|
|Position:||Head of Department; Head of Division|
The Big Thorn heads the Disturbing Acts of Violence Department as a whole and also specifically looks after DAVD's Action Division. His rarely used proper name is Thornelius Archimedes III, indicating that he is one of the Firstborn.
The Thorn's office, located in the basement of HQ with the rest of the DAVD, is painted red and black.
He either doesn't like or doesn't have access to the kind of computer technology available to other departments, judging by the physical paper-and-cabinets filing system used in DAVD(i). They even have overflow storage somewhere in Siberia.
He is lenient with his agents when it comes to rules about staying in-fic for the full observation period; they are dealing with disturbing acts of violence. However, he doesn't put up with intradepartmental squabbling instigated by his fractious division heads. He dislikes Quiddich and seems to be a regular at the Chlorophyll Club.