"Flues"

Earning this nickname due to the pipe-like engine housings.

Probably one of

the strangest FSF designs so far, the MuG-6 "Flues" looks like an normal Soviet jet at first until you look at the engines. The twin engine pipes might make the MuG-6 look weird, but believe me when I say the MuG-6 is the best MuG aircraft yet; of the three so far (MuG-2/4/6), the MuG-6 is the fastest, has the strongest armor, is amazingly maneuverable (though still beat by the MuG-2), and features a deadly armament of two 20mm cannons and one 37mm cannon (the 20mms are both later replaced by 23mms, but for now you get to keep 20mms). The Flues was built to fight if not kill, and it's certainly a fearsome contender for just about anything in the skies. Well, except the A2R5, that thing dunks on literally anyone unless you're hacking.

Trivia

-The unusual cockpit design of the MuG-6 was loosely inspired by the Bf-109 and Bi-1.
-Despite its weird engine placement, the rest of the aircraft could make it a candidate for one of the most normal FSF designs. Heck, it even looks like a MiG-15 to some degree, which is perfect since it's the same nation and era.
-Despite it literally being written on paper, many pilots didn't realize that the plane was called "Flues" as in a type of chimney rather than "flus" like plural of the flu, which lead to many crews saying "watch out for the influenza!" if a MuG-6 was present.
-If the MuG-6 were sentient, it would have reason to be called "flus" rather than "Flues," because it'd be sick of its own "brothers;" the MuG-2 is a laughing stock for its "frown," and the MuG-4 is a laughing stock for its whole existence.