Discworld character studies

I'm painting my way through some of my favorite Terry Pratchett characters, trying to capture what I think is a realistic version of these classic characters--like what would Sergeant Detritus look like if you met him on the streets of Ankh-Morpork?

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Sergeant Angua of the Ankh Morpork City Watch

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Sergeant Detritus of the Ankh Morpork City Watch

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Sir Samuel Vimes, Commander of the Ankh-Morpork City Watch, Duke of Ankh--also known by the lofty title, Blackboard Monitor

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Corporal Cheery Littlebottom

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Carrot Ironfoundersson

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Havelock Vetinari, the Patrician of Ankh-Morpork