The Mig-21 was originally built by the Mikoyan and Gurevich Design Bureau in the Soviet Union with a NATO nickname Fishbed. No other jet has had as many planes produced as the Mig-21. Depending on the reference source 8,000 - 13,000 planes of all versions were made in the Soviet Union, under license to allied countries and China without license. A small, fast, agile, dependable and most importantly simple making it easy to turn out great numbers of the plane.