Thomas Knox
It's no secret to anyone who has read DWTD that Thomas is Robert's not-so-evil twin. Therefore, the face for Robert was even more import. Thomas is the lighter side of Robert. Where Robert is obsessive to the point of insanity, Thomas is whimsical to the point of apathy. Robert says of their relationship:
"We were a two part unit, essential to the King's force. Not only were we the most skilled warriors in the military, but Thom and I excelled in correspondence to each other. I, the attacker, he, the defender. Once we had become ... what we are, we came to realize the extent of our connection to one another. It was as if there was something passed between us in the womb, during the splitting of the egg. Even as humans, we were unusually bound to one another. And Inanna could see that. How perfect it should turn out to be that I attract people, whilst he hides them."
Thomas is a cloak, able to distort anyone's senses. His prey will only see what he wants them to see, hear what he wants them to hear, and believe whatever he wants them to believe. It is his power that has kept the Fraternity hidden from the Volturi for so long.
Robert describes Thomas' power as such:
"And Thom's, well, Thom's is quite remarkable. He is the master of manipulation, and his skills have only gotten stronger over the years. He can distort your senses anyway he desires. You'll hear only want he wants, see what he wants, smell what he wants. And he can control thousands at the same time. That's how we've remained hidden for so long. If Aro knew we were still around, he would be after us in a heart beat."
Thomas was also a general in the Babylonian army before being changed into what he is today. He is the second in command of the Fraternity, and is loyal to his brother through thick and thin. Thomas is very realistic about what Robert seems to be going through. He understands his brother's obsession, yet he wishes Robert would be happy with what he already has. Thomas is also a Strigoi.