"the ones that meet Chamly can be divided in two groups the ones that say... WTF ?! and the ones that go like Aww... well... i'm in the second group... you can resist to that cute muzzle ^^"
- Yuuki Kobayashi

the unit-1-0 is an unique creation is a mobile generator created to re-charge inside protected areas allied units as AP-Ms, GYN-01Ds and even some human sized Legendary machines...
due to the task it grew a mother (or big sister) like behavior she always care for the others and kidnly helps anyone like if the where all like her sons... it's not hard to guess that her nickname became "Big Mama" and that she became a great friend of Athena