Bianca

Varric has a signature crossbow named Bianca. Bianca possess a carved-wood stock and brass embellishes; and for melee purposes, a retractable bayonet slides out of a slot under the bolt.

While Bianca is the only weapon Varric can use ingame, Bianca is nothing to laugh at - It is one of the few weapons that level up with its Owner. So the higher level Varric is, the stronger this crossbow becomes.

Trivia

 * Bianca cannot be unequipped.
 * Bianca's name may be a reference to Assassin's Creed II, wherein Bartolomeo d'Alviano has a sword, also named Bianca.