MM-001a 00

The MM-001a 00 (aka 00, pronounced "Double-Oh") is the titular mech of Mobile Mech 00. It is the successor of the MM-00p 0, and is piloted by Jacob Mars. As the origin of all 00s in Days Century-3, it is considered the Grandfather of Advanced Armors.

History
The 00 was developed by Elliot Carbine and modified by various HOSF engineers at Colony 14 as a next generation Advanced Armor against the Eve. The developers used the data from various battles with the Eve to design the 00's weaponry, and made it in the basic size and shape of an Eve. Before it was completed, the developers made a prototype to see if the equipment and armor of the 00 would work, creating the MM-00p 0. After it's test run, the 00 was completed. It was given to the HOSF and Jenni Crawford was made it's pilot.

During it's first sortie against the Eve, the head of the unit was ripped out and taken. Jenni was soon labeled as Killed In Action. After the sortie, the mech was brought back to Colony 14 to have it repaired and it's armor replaced with Sparrow Iron.