Gin

Gin is a member of the Empire's Assassination group Group of Terror. Gin was among the children picked for training as the Empire's assassins. Since she lacked the necessary skills naturally, she had to be given performance-enhancing drugs. Along with the rest of her group, she learned to kill using death row prisoners as targets, executing them. Gin carried an unusually large sword and was quite skilled with it. Under the influence of the drugs, she was faster and stronger than regular humans. During their first field mission Gin was one of the survivors along with Natala and Kurome. However, the three were still punished since their group was the only one to have casualties; they were locked up in a basement with no drugs to support them. She was later sent on another mission with Natala and Kurome but got trapped with the two of them. (Source: Akame ga Kill! Wiki)