Promencius Four was a colonial backwater situated in the Tion Hegemony of the Outer Rim Territories, where it was considered rare to see a sanitation station. In 3 ABY, the Rebel Alliance First Sergeant Hazram Namir was asked if he was from a Tionese backwater such as Promencius Four or Khuteb by the former Imperial governor Everi Chalis based on his dialect. Namir confirmed that he was from a Tionese planet, and Chalis later learned that it was named Crucival.
Promencius Four was mentioned in the 2015 canon novel Battlefront: Twilight Company, written by Alexander Freed.
Promencius Four was mentioned in the 2015 canon novel Battlefront: Twilight Company, written by Alexander Freed.