Also known as: ジム・キャノンII, RGC-83, RGC-83ジム・キャノンII
A fictional Mecha from the Gundam series. It first appeared in the Gundam 0083 OVA from 1991.
The RGC-83 GM Cannon II is a vastly improved version of the original GM Cannon Mobile Suit, featuring a much more higher output reactor capable of powering twin beam cannons as opposed to a single shell-firing artillery gun and a beam saber, as well as a modified version of the Gundam Alex's Chobham Reactive Armor package for great durability - however, the type paid for it dearly, being severely hindered in its mobility.