Wee Mad Athur has been described as an urbanised Nac Mac Feegle, although he was raised as a gnome. Fiendishly strong, and suspiciously Geordie, he kills rats for free (because he can sell them on to the many dwarfish eateries in the city), though he is not a member of the Ratcatchers' Guild.
Arthur lived primarily in the sewers of Ankh-Morpork. After an encounter with Fred Colon Arthur was hired as a special Watchman. His Watch helmet is a converted salt shaker, and he uses a full-size Watchman's badge as a shield.
In his association with the Watch, Carrot used him as the city's last line of defence against raiding Feegle (who were wrecking a pub). Arthur took on thirty Feegle and won, testament to his fighting ability and suicidal lunacy. He knocked out and arrested Rob Anybody, Daft Wullie, and Big Yan in quick succession.
Raised as a gnome, Arthur was sadly no good at shoe repairs - he later learned that this was because he was actually a Pictsie, just like the wee free men he had arrested. However, being free of the cultural influence left him very well educated and, well, clean. After spending some time with the clan though, he decided to take a leave-of-absence from the Ankh-Morpork City Watch for the present time, and embrace his inner Feegle. This, of course, opens-up the possibility of a new Watch to be founded in the hills of The Chalk...
Later, Arthur returned to the Watch and having been taught Feegle secrets such as the craw-step, which he used to travel to Howandaland to investigate the tobacco plantation there. He uncovered the slavery and death of the Goblin captives and was able to single-handedly subdue the human slavers and free the surviving Goblins. He was congratulated on his actions by Commander Vimes, especially as he had left the slavers alive, with Vimes implying he would have shown less self-control.
In searching for this cache, you have come across a page torn from Arthur's rat catching journal. Unfortunately I have not been able to made head or tail of it ... perhaps you will have better fortune?
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