Loona/History

Past
Not much is known about Loona's history, but at some point before the start of the series, Loona was given up for adoption at a Hellhound Adoption Foundation, where she lived like a prisoner and gave the employees a hard time until Blitzo adopted her when she was one month away from turning eighteen. Despite being old enough to look after herself, Blitzo used to hire babysitters to look after Loona during his absence but the babysitter apparently didn't like Loona.

When Blitzo opened I.M.P, he hired Loona as the receptionist; due to her laid back and dismissive nature, it is presumed that Loona did not actively seek out the position and only took it due to Blitzo asking her to since he didn't want her in the field out of fear that she may be hurt or worse, despite the fact that Loona is just as good, if not better, in both using guns and fighting bare-handed.

"Spring Broken"
Loona apparently struggled with making friends, as she outright confesses this to Vortex as a poor attempt to flirt with him, and reveals that she had no friends at all until he offered to invite her to his girlfriend's parties to help her make friends.