[He's probably here for a job, though he might just be people-watching. Chances are he's A: in disguise so he can actually interact with people (in which case he looks nothing like himself) or B: can only be seen by folks who have had a near-death experience or are otherwise sensitive to The Unknown (psychics and very young kids and the like) OR option C: it's more like the Floating Market from Neverwhere, then it's already full of supernatural types anyway and he's there for supplies and/or knick-knacks]
Charles - Dead Boy Detectives - OTA
OR option C: it's more like the Floating Market from Neverwhere, then it's already full of supernatural types anyway and he's there for supplies and/or knick-knacks]