Hiver is the current Bureau Chief of the GTO. She is also a supporting character in Kiddy Girl-And.
Hiver has light green hair and green eyes. She also always wears purple lipsticks and has glasses.
Her means Winter in French, and for some reason her secretary Sommer, means Summer in German. Hiver is the reincarnation of Mercredi. She has the ability to travel through dimensions, which is why she always seems to appear out of nowhere.
Hiver has shown that she is in some kind of relationship with Sommer, her secretary. As shown in episode 6, they were doing something special in Hiver's office, but Hiver denies it.