Technology & Combat Characteristics
A variant of the GNX-607T GN-XII, the GN-XII Cannon is created using operating data from the Team Trinity's Gundam Thrones and specializes in long-range bombardments. Its signature weapon is the GN Cannon on the right shoulder, and when required, another GN Cannon can be mounted on the left shoulder as well.
The GN-XII Cannon also has a unique head unit with a central high precision camera dedicated for shooting that is surrounded by four standard GN-XII's head cameras. Aside from these changes, the GN-XII Cannon retains the other features of the normal GN-XII.
During combat, the GN-XII Cannon can work cooperatively with other GN-XIIs. It has been deployed in a three unit team, where it and the GN-XII shoot from long range and close range respectively, while the GNX-607T/AC GN-XII Sword restricts the enemy machine's movement using close combat. The GN-XII Cannon can also partner and be defended by the GN-XII Sword while it shoots at the enemy.
History
A.D. 2309, a UN Forces missile base in Africa was assaulted by an anti-UN group, whose members include the rogue Gundam Meister Fon Spaak, with the intention of taking over the base so that they can negotiate with the UN Forces.
The anti-UN group split into two teams, one team lured away the AEU-09 AEU Enacts and SVMS-01 Union Flags guarding the base, while the other infiltrated the base. This second team was caught off guard when one of their mobile suits was taken out by a long-range beam attack from the GN-XII Cannon, which was accompanied by a GNX-607T/AC GN-XII Sword and a GNX-607T GN-XII. Intelligence obtained by the anti-UN group had earlier indicated that the base did not have any GN Drive Tau-equipped mobile suits due to its low importance, among other reasons. Fon and his GNY-001F2 Gundam Astraea Type F2 then battled against the three units.
As the GN-XII, GN-XII Sword and GN-XII Cannon attack in perfect unity – the GN-XII and GN-XII Cannon shooting from close and long range respectively, while the GN-XII Sword restricted the Astraea Type F2's movement through close combat – Fon had a hard time fighting them off. Eventually, the GN-XII left to stop other members of the second team from taking over the base, leaving the GN-XII Sword and GN-XII Cannon to continue fighting the Astraea Type F2. As the GN-XII Cannon shot at Astraea Type F2, it was protected by the GN-XII Sword.
Eventually, Fon and his Astraea Type F2 took out all three GN Drive Tau-equipped mobile suits. The anti-UN group won the battle, but this was a trap all along; the base did not contain any missiles, only old rockets left behind from the construction of the Orbital Elevator. However, Fon had anticipated the trap and was after the rockets, which he then used to fly into space with his Gundam.
