The Russian Undercover Fighting Force, also known as R.U.F.F., is the Russian counterpart of T.U.F.F. So far, it has only been mentioned and seen in Dog Save the Queen.
- Just like many famous Russian buildings and especially churches, R.U.F.F. HQ has the stereotypical onion dome on it.
- R.U.F.F. HQ has a red color, like many buildings of the current Red Square in Moscow. It's probably made of brick, which is a common material for buildings in that area.
- The agency's acronym is a pun on the word "rough".