Ballister Boldheart is the knight. He always wanted to be one. He was a child of the lower classes, and breaks into the Institute with the goal of learning to fight monsters. He was apprehended by Institute guards. Valerin made an exception for him: although Ballister is not from a noble bloodline, she thought he might have the makings of a hero, and gave him a chance to train at the Institute to become a knight. She wasn’t wrong. He’s a good knight 