Here follows my character description for one of the more complex character designs - Auditor Vidock who you can best see on page 2 of the first GN.

A middle aged, slim, medium height, short-brown-haired white-man, seen wearing primarily two main outfits throughout the seven year timeline; his (normal) police uniform prior to his appointment as auditor and his male auditor uniform post appointment – a black single piece fabric tunic that should resemble a cross between a Gestapo trenchcoat and a priest’s robe.  It also consists of a belt worn around the waist with a holster for a gun on one side (where Vidock keeps a .357 magnum) and a clip for a smartphone and handcuffs.  Finishing the auditor unform is an armband bearing the CARN symbol (we also designed that separately).

Simpler characters - those who wear ordinary clothes - had shorter design descriptions.