Quirky and mischievous, she once belonged to the ELID Disaster Alleviation Organization and worked as a searcher and bodyguard. Her partner "Jack the Lightning" is a search dog who acts as FO-12's eyes and provides intelligence in places out of her reach. She doesn't see Jack as a pet, but as a comrade. Due to her previous job, she enjoys hanging out with SG T-Dolls with high defensive capabilities. She especially likes asking Jack to test the durability of their shields, causing many of them to beat tooth marks.