GUARD Fighter (G.U.A.R.D.戦闘機 G.U.A.R.D. Sentōki) is a modified McDonnell Douglas F-15 Eagle used by GUARD and it's branch, XIG. Each branches of GUARD around the globe possess GUARD Fighters with different paintjobs for respective countries (Eg: The US branch possess white and blue paintjob while the Australia branch posses a grey paintjob). After the Aerial Base's destruction when destroying Mokian, several XIG pilots piloted the jet in an operation to restore Gaia and Agul's light.
- The color-scheme of the US paintjob of the GUARD Fighter resembles the Israel national flag.