The Mikolev MiM-31 Karyovin fighter jet is an advanced delta wing combat aircraft developed by the Anti-U.N. Forces as their answer to the F203 Dragon II jet deployed by the U.N. Spacy early in the U.N. Wars.
Using most of the same materials, the Karyovin was a comparable aircraft and was a step ahead of the conventional combat jets of its time.
In real life this jet was designed by Kawamori Shouji in the early 80s.