Arturo Rodriguez

 is the owner of Commonwealth Weaponry located inside of the Diamond City market. He sells a variety of weapons and almost all the types of ammo, as well as selling the unique Big Boy, a weapon similar to the Fat Man, as well as Old Faithful, a unique laser pistol.

Interactions with the player character
Arturo mainly just serves are a provider of weapons, ammunitions, and shipments of aluminum, copper, gears, and screws for the player. In addition, with a high enough charisma he can be persuaded to tell the player about Nick Valentine and the location of his office, if, however, the player has not already done so through a variety of other characters throughout Diamond City such as the news reporter Piper or Mayor McDonough.

He usually stocks Fusion Cores as well, which is invaluable for using a suit of Power Armor.

Appearances
appears only in Fallout 4.