For those that are not aware the F-2 has the nickname "Viper Zero" (Viper being the nickname F-16 drivers use and a nod to the YF-16 days competing against the YF-17 Cobra (which would later develop into the FA-18 Hornet), also F-2 was a result of the F-16 Agile Falcon project which never saw production in the US but was picked up by Japan and produced by Mitsubishi Heavy Industries the same company that made the A6M Zero), furthermore Hoppopo wants Zeros because IRL the famous Akutan Zero (aka Koga's Zero and the Aleutian Zero) (one of Ryuujous planes) was captured on the Akutan Island, Alaska Territory which Hoppopo represents and later was tested in the US.