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 are invaluable for using Power armor.

Appearances
appears only in Fallout 4.