Regi Blattaria

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

Background
Regi spawns in a bombed-out building west of the Corvega assembly plant with a small army of radroaches when the player character reaches level 35. He carries either a minigun or a Gatling laser. Upon death, he drops a random legendary item based on the player character's level.

Appearances
Regi Blattaria appears only in Fallout 4.

Behind the scenes
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. To support this, within the game's code his editor ID is POIRoachKing.