Did Pratchett ever parody comics in Discworld?

[jeriendhal]

Because otherwise there's a fine fanfic to be written with a rich idiot with no day job Batman expy coming to Ankh Morpok and discovering that Vimes has no interest in becoming Commissioner Gordon.

Actually, Vimes first inclination when encountering a costumed vigilante dressed head to toe in black would be to punch him in the face and call the Assassins Guild to tell them one of their members has lost their biscuit. Then he might punch him again just to be sure he stays down.