Sapphire is the main protagonist in ‘Dark Renaissance’.  She is the last surviving triplet of Saffron  Carter-Hargrave.  Her sisters were named Shiva and Selene.

Sapphire was the odd triplet.  She was born not breathing and her umbilical cord wrapped tight about her neck.  Heroic measures were taken to save her life, and they worked, but her brain had been starved of oxygen long enough that some portions, such as the connection between the other two triplets, did not exist.  Shiva and Selene both could anticipate the other’s thoughts, Sapphire was alone while identical.

Her sisters grew up highly intelligent, and driven.  Sapphire was not the brilliant mind her sisters were, but made up for most shortcomings by being determined and persistent in everything she attempted.  Power-wise, her sisters shared a greater portion of abilities and powers, Sapphire’s own power set was a part of her mother’s who was the original Yellowjakket.  Sapphire’s powerset was in speed, and electricity, being able to fire bolts of it that could burn out equipment and stun human opponents.  She could push her power and use it effectively against hostile superhumans.  Her sisters could teleport, use light to create solid objects and use electricity like Sapphire, only with more control.

Her sisters never felt sorry for her, nor did Sapphire feel envious.  They were sisters and looked out for each other, just like their father and mother taught them.  As stated in the book, they took their mother’s identity as Yellowjakket when she was killed.

In the story, Sapphire is picking up the pieces and attempting to carry on as the sole-surviving Yellowjakket and protect people from the powers that be in the form of Hamish Monroe.  She is thrust into a far bigger role as she discovers that her sisters were aiming far beyond just saving lives in London.  The story is as much about where Sapphire comes from as it is about her differences from her triplet sisters and what they have set in motion.