Technology & Combat Characteristics
The LR-GAT-X102 Regen Duel Gundam is a strengthened and redesigned version of the GAT-X102 Duel Gundam and its Assault Shroud configuration. It has high combat capabilities at all ranges by using the appropriate weapons at the right range. The 'Regen' in the mobile suit's name means 'rain' in German, and it is a reference to how the machine can cause a rain of blood in the battlefield. Like the other Librarian Works' mobile suits, the Regen Duel is compatible with Striker Packs, making it even more adaptable. It is usually armed with the Bazooka Striker, mounting the Gáe Bulg 350mm rail bazooka, and its other weaponry are similar to those of the original Duel, with the addition of the Rudra 115mm rail rifle.
The 'LR' in the mobile suit's model code stands for "Librarian Regen". During combat, the Regen Duel would use the rail bazooka for long range attacks, then at mid range, it would eject the Bazooka Striker, lightening the mobile suit and increasing its speed. At this range, it would switch to the beam rifle and rail rifle, and then when in close combat range, it would use the beam sabers. In terms of defensive capabilities, the Regen Duel has added armor on the chest, waist and feet. Unlike the Duel's Assault Shroud, the additional armor is not as extensive as the aim is to provide sufficient protection while reducing the dead weight caused by unnecessary armor.
Kaite Madigan, a professional MS pilot, is hired to pilot the mobile suit as a weapon specialist with high piloting skills is needed to use the machine's weapons effectively at the right range. The Regen Duel also has a new mouth plate known as the 'GZ Type' that is requested by Kaite, and it is based on one of the mobile suits in his collection. This mouth plate however does not grant any new or improved capabilities. Additionally, the new shoulder thrusters of the Regen Duel were based on the LG-GAT-X105 Gale Strike Gundam's data, and improves mobility in side to side movements. They are smaller than the Gale Strike's shoulder thrusters as the developers took into account the Regen Duel's all range combat usage.
History
The LR-GAT-X102 Regen Duel Gundam was frequently deployed by Librarian Works in their attack on Earth Alliance and ZAFT forces. It was also deployed alongside the LV-ZGMF-X23S Vent Saviour Gundam during Gud Vair's second meeting with Elijah Kiel but it was not involved in the battle. For that mission, Kaite Madigan was merely there to monitor Gud Vair's action. When Gud Vair escaped after hijacking the ZGMF-1001 Elijah's ZAKU Phantom, Kaite immediately gave chase in the Regen Duel but failed to capture him. After the collapse of Librarian Works, the whereabouts of Regen Duel is unknown but it is highly likely that it ended up in Kaite's collection.