R.O.U.S. "Rodent of Unusual Sharpness"
RK-22 "Rat King 2022"
The Last Word
Battle RAT "BRAT"
Back-Azimuth Modern Fighter "B.A.M.F"
(A back azimuth is a "bearing" you follow to get you out of trouble... it's made of bearings, get it...)
Dead Reckoning (another kind of bearing)