Cosette lives in her house with her sister, Eponine.
Cosette is named after the famous character Cosette from the book Lés Misérables by Victor Hugo.
Cosette and Eponine Pontmercy were born to Enjolras and Fantine Pontmercy in 1984. Cosette was the more braun of the sisters. Cosette and Eponine were very close, they decided together that if neither of them were married by age 30, then they would join the army. Cosette and Eponine reached their 29th birthday, and with neither of them being married, moved to Riverview and started training together. Cosette decided that she was happy in the military with Eponine, and the two are best friends as well as sisters.