Caroline and Justine Are both twin wardens, making sure they’re prisoner/inmate to complete their job. However, both of their personalities are completely different.Caroline is the most aggressive one however, she does have a very soft side if you get her embarrass enough. On the other hand  Justine is the most calm demeanor one, however, she has a track record of teasing her other twin, and actually can be a little bit more meaner.
https://megamitensei.fandom.com/wiki/Caroline_%26_Justine