One thing I enjoy about Vimes is that he’s naturally a very noir, as in the genre, person…but Discworld, by contrast, isn’t noir at all. And neither is virtually anyone else around him. So you get stuff like this Detritus quote, aka my favorite description of Vimes:
Mr Vimes is okay but he a bit weird about some stuff, he keepin’ on sayin’ stuff like dis city is a meltin’ pot an’ all der scum floats to der top, and stuff like dat.
I love that. You get this mental image of him skulking around in a trenchcoat saying cynical noir-ish things and everyone around him going ‘well you know he’s kinda weird but he’s got your back so it’s all right I guess’ and generally being fond but bemused.
It’s so great.