GM(機動戦士ガンダム) ジムシリーズ ジム(機動戦士ガンダム)
A fictional mecha that first appeared in Mobile Suit Gundam (1979).
The GM is an Earth Federation mass production all-environment combat mobile suit based off the design and data obtained from the learning computer of the RX-78-2 Gundam more advanced prototype.
It is far less powerful and durable than the Gundam, but much cheaper to mass produce and easier to mantain and repair.
In real life it was designed by Ookawara Kunio in the late 70s.