Created in a secret covert project for which only high ranking members of S.H.I.E.L.D. were privy to, including Director Maria Hill and Nick Fury.
After its completion the Gungnir was hijacked by Iron Nail, a former S.H.I.E.L.D. agent, and Dr. Mindbubble, a super-soldier from the Weapon Minus program. They hoped to use Gungnir to start a conflict that would bring down S.H.I.E.L.D. and the United States permanently. The two were confronted by Captain America, and during the fight Mindbubble fell out of a broken window to his apparent death. This gave Iron Nail enough time to shift Gungnir into it's robot mode and have it attack the country of Nrosvekistan.