Gabriella Costa

Gabriella Costa, more commonly known as just Gabi, was a girl camper at Camp Fireside who ended up becoming rather close to Andrew Stark. Gabi considered herself one of Andrew's closest friends and Andrew did the same, even when the two were at odds over Andrew's rather gray morals.

Gabi appeared as a central character in The Regulator and returned in a major role in Age of Reclamation along with most of the other Regulator characters. She had a minor appearance in Age of Imagination.

Personality
Gabi is strong willed and brave, and doesn't like to be looked down upon due to her gender or age. She has a strong moral compass, and doesn't become hardened or jaded to her surroundings throughout the whole apocalypse.

Trivia

 * Gabi is one of few people to meet both Andrew Stark and Clay Rogers, the only other person being Ivan.