CB-001 1 Gundam

1 Gundam (1 pronounced like the letter "I", Ai Gundam, literally Love or Beloved Gundam) is the half-prototype design of the CB-0000G/C Reborns Gundam/Cannon, piloted by Beside Pain in Gundam 00P and in Gundam 00I.

Technology & Combat Characteristics
Unlike the GNY-001 Gundam Astraea, which was built to develop technology, 1-Gundam was built as an successor to GN-000 0 Gundam, but specifically created as a general purpose machine for an Innovade pilot. 1-Gundam was built in secret and only to be used on special assignments in conjunction with the GN Cannon. Similar to its "brother" unit, the CBY-077 GN Cannon, being the prototype to the Reborns Cannon, the 1 Gundam is a stripped down prototype of CB-0000G/C Reborns Gundam/Reborns Cannon. It is mentioned that the 1 Gundam could be equipped with other armament, however it is never mentioned what that equipment is.

In Gundam 00P, 1 Gundam's powerplant was a GN Drive, but at some point in Gundam 00I 1 Gundam was equipped with a GN Drive Tau.

GN Beam Saber
1 Gundam's beams sabers are prototypes for the Reborns Gundam's Large Beam Sabers. It is unclear whether or not 1 Gundam's beam sabers can adjust their output like the Reborns Gundam can.

GN Beam Rifle
Prototype to the Reborns Gundam/Cannon's GN Buster Rifle. Like the beam sabers, it is unclear if 1 Gundam's beam rifle can adjust its output.

History
The 1 Gundam first appeared in the final chapters of the 00P, piloted by Beside Pain, where it was fought and defeated by Grave Violento in the Gundam Rasiel. Before the said event, the 1 Gundam managed to critically damage the GNY-0042-874 Gundam Artemie. Many years later, during the events in 00I, Leif Recitativo (Besides' present persona) finds the 1 Gundam fully repaired and in a sealed state. However before Leif can get to it, he is confronted by Hixar Fermi.Leif explained that he was on a mission. “Won’t you tell me about that mission? Beside Pain.” Hixar turned his gun on Leif. Hixar was moving based on the information he had gotten from Veda, “today, in this place, Beside Pain will appear.”And 1 Gundam wakes up. 1 Gundam attacking Hixar and sitting in 1 Gundam’s cockpit is Leif.

Gundam 00I, chapter 7
In chapter 7 of Gundam 00, Leif heads towards Telicyra and the rest. Lars was controlling three Tierens and killed Brad when 1 Gundam descends from heaven like an angel and shots down the the Tierens. In chapter 8,Lars contacts Mememto Mori to attack Leif and 1 Gundam, but he protected himself using 1 Gundam's GN particles. However, Lars then threatened Lief or Beside Pain if he dies the comrades he discovers will not be able to be awakened so Leif backs away.