Regi Blattaria is a hostile character living in the Commonwealth in 2287.


Regi spawns after a certain level is reached in a bombed out building west of the Corvega assembly plant with a small army of radroaches. He carries either a minigun, Gatling laser or another legendary item based on player character's level.

Interactions with the player characterEdit

Interactions overviewEdit

General Services Quests
Essential: noIcon cross
Companion: noIcon cross
Perk: noIcon cross
Merchant: noIcon cross
Doctor: noIcon cross
Rents bed/room: noIcon cross
Starts quests: noIcon cross
Involved in quests: noIcon cross


Apparel Weapon Other items On death
Helmeted cage armor Gatling laser


  • The Sole Survivor says "Don't move, Roach!" when holding him up with the Intimidation perk.
  • If one reaches his bombed-out building before reaching the appropriate level, it will be inhabited by the roaches only.


Regi Blattaria appears only in Fallout 4.

Behind the scenesEdit

His roach army, and the fact that his name roughly translates to King Roach (Regi from Regis, while Blattaria is the Latin name for cockroach) while he is carrying a minigun all imply he is a reference to The Roach King from Fallout 3. There is even a toy rocket reminiscent of the Roach King's throne on a shelf near his spawn point. There's also an ushanka hat like the Roach King wore. To support this, within the game's code his Editor ID is "POIRoachKing".