Brancussi is an Assassins' Guild member who can be found at Willy's House on Lanilor Lane in Aleroth during the events of Divinity II: Flames of Vengeance. He is well-spoken and knowledgeable concerning the laws of Rivellon.
If the player side with Brancussi they will be able to trade with him. He sells a variety of armor (including the Shadow Archer Cuirass of the Shadow Archer armor set), jewelry, weapons, charms & ultimate quality enchantment formulas. The player can mindread him to lower his prices, revealing "These goods are getting harder and harder to peddle. I should just sell them cheap to my Dragon friend and be done with it."
If the player sides against Brancussi they will be unable to trade with him. Willy pulls the alarm, and the player is forced into battle with Brancussi and associates, allowing them to loot the Shadow Archer Cuirass when he is killed.