The SRG-02 Grungust Type-2 (グルンガスト2号機 Grungust Nishiki) is the successor to the original Grungust, also created by Tesla Leicht near the tail end of the war with the Divine Crusaders. In battle, it is roughly equivalent to the first Grungust, however, its armor seems to be lighter in order to lower production costs. In addition, the transformation abilities have been limited so that it can only transform into the flying G-Hawk, though it has also been modified using new technology so that the transforming sequence can occur twice as fast.
This unit uses Extra-Over Technology, alien technology recovered from Meteor-3's crash site. It also utilizes a T-Link System for Psychodrivers to use. In the Alpha games, the player's chosen main characters gain this unit after it suddenly crashes into their school (which later actually turns out to be something that was planned, since they are promising Psychodrivers).
During Alpha, according to Kusuha Mizuha's storyline, after the Chōkijin join you, they absorb the Grungust Type-2 into their being to repair themselves, before combining to form the RyuKoOh and KoRyuOh. In the Original Generation games, Kusuha would receive the Grungust Type-2 to pilot on her own. Here, the Type-2 was a testbed for a possible series of mass produced mecha, thought to replace the Earth Federation Army's units.