Callaghan Flint is a Bulldog, low slung, deliberate, and rarely in a hurry. On most mornings Callaghan Flint can be found near the glassbird roost, doing very little and calling it research. There is a corner of the drowned subway tunnels where Callaghan Flint is unofficially assumed to be in charge of nothing in particular. The old soup stalls have heard most of Callaghan Flint's theories and politely keep them to themselves.