Manufactured by Stonewell and Bellcom, the VF-X1 was the first variable fighter prototype to be flight-tested. It was outfitted with a thermonuclear reaction engine and transformation mechanism. However, it did not have a head when in Battroid form. It's final color scheme is gray, and the engine nacelle portion contained the word "TEST".
Built as a flight-capable test bed and proof of concept, trial production began in early 2006. In February 2007, flight tests of the VF-X1 began and in November that year, the successful tests of tht VF-X1 lead to formal adoption of the VF-1 Valkyrie variable fighter by the United Nations Government.
During its development, the VF-X1 competed against the VF-X-2, which was also developed using OverTechnology. During its initial tests, the VF-X1's GERWALK hovering ability proved suitable for high-speed movement on the ground, which led to the airframe structure being reviewed and the propulsion system adjusted. It appeared during a flashback scene in the 33rd episode of Super Dimension Fortress Macross, called "Rainy Night".
- ↑ Macross Perfect Memory page 153.