Rejiek Hidesman

Rejiek Hidesman is a malevolent tanner turned serial killer who operates out of the Bridge District of Athkatla during the events of Baldur's Gate II: Shadows of Amn and the equivalent portion of Baldur's Gate II: Enhanced Edition.

Race
Rejiek was originally human, but at some unknown point was transformed into a Skin Dancer, a unique monster with the ability to assume the forms of other humanoids by stealing their skin.

Crimes
For unknown reasons, Rejiek was contacted by the Twisted Rune and commissioned to murder a number of people in Athkatla's poorer districts, stealing their skins and forming the base work to create a suit of Human Flesh Leather Armor; once the raw suit was ready, he was to deliver it to a contact in order to be properly completed as a powerfully, if malevolently, enchanted suit.

Quests
Rejiek is the ultimate villain of the quest Solve the "skinner" murders in the Bridge District. He escapes once discovered as part of that quest, but is ultimately brought to justice during the quest Helping Tiris in Trademeet.