The F90II Gundam F90II was built from the recovered OMS-90R Gundam F90 by Strategic Naval Research Institute (SNRI). Its speed and maneuverability is significantly higher compared to the original F90 Gundam F90 because of the added thrusters and a more powerful reactor. However, the most notable feature of the F90II Gundam F90II is the prototype Bio-Computer System, which replaces the original A.I System. This psycommu-based system is able to raise the suit's overall capability to an even greater level by increasing the pilot's awareness to the battlefield. The Gundam F90II retains the hardpoints and weapon rack of the Gundam F90, and can be equipped with Mission Packs. In particular, it has been shown to use the Type I (Intercept Type) and Type L (Long-Range Type).
During the aftermath of the Earth Federation Forces (EFF)' battle with the Mars Zeon Army in UC 0120, the EFF recovered the remains of the stolen OMS-90R Gundam F90 and sent the unit back to the SNRI to be reconstructed. The mobile suit was rebuilt into the improved Gundam F90II, following the concept of optional mission pack versatility of the original Gundam F90.