Dar Macabon, the Falconer, is the stoic leader of the Chessmen. He earned his name when he became spiritually bonded to his friend Sersi, the falcon. He served as the leader of the Chyssian Royal Guard for several years before his team was framed for the king's murder.
Duty and honor are everything. That's why he'll give his life to protect the infant princess or hopefully give her home back to her one day. When someone told him his crew was like chessmen without a king, the name stuck. He decided they would be known as the Chessmen. As it turns out, Chess (or Chyss as it's called on Chyssia) is a training game for the Royal Guard. So the name had further reason to stick.
He prefers to learn as much as he can before fighting if possible. Unfortunate events have tested his resolve sorely since having to flee Chyssia. Like his crew, he's been pushed the limits by constant attempts on his and the princess's life.
As a trivial fact; Falconer's eyes are blue, but they change in shade due to how he's feeling. The darker they get, the more you should worry.
Falconer won't rest until it's finally safe to take the princess back home.