Gina is one of Monica Morrel's 'followers'. Her surname is never mentioned. Throughout the books, and espescially in Bite Club it has shown through that Gina is the most ruthless, violent and spiteful members of Monica's gang. Jennifer backs down in bad situations, and in later books it shows that even Monica has a soft side. Gina has poured acid down Claire's back, threatened people with knives many times, nearly killed Miranda, and much more.