Caleb has, blue eyes, blonde hair, a muscular and lean body and he is Caucasian.
Awkward and occasionally jumpy. Has trouble controlling his feelings.
Caleb was born in Nebraska, USA. His entire family were military related and he had 2 older brothers.
During the battle of patience creek, Caleb used his Duplication Legacy to create a twin brother for himself, calling the duplicate "Christian." When the Piken Mog attempts to kill Caleb, John, Sam, Walker, and Lawson, Caleb sends "Christian" to attack, and after Christian is revealed to be a duplicate of Caleb, Lawson encourages Caleb to create two more duplicates to attack the Piken-Mog. After they escape the facility with Number Five, Daniela, and others, John and Six order Caleb, Nigel, and Ran to lead the Human-Garde as the leaders of tomorrow. John also gives Caleb the Chimæra Regal, who lands on his shoulder in hawk form.
During his time at the academy, Caleb struggles with control of his duplicates. It is suggested he previously had multiple personality disorder, which manifested in his duplicates. When Nigel asks him if the voices ever stop, Caleb replies "Never", suggesting that the duplicates are always arguing in his head.
At the end of Generation One, Caleb starts a band with Nigel and clones, in an attempt to help control the duplicates a little better.
Like all Garde, Caleb has the power to move objects with his mind.
Caleb's other known Legacy includes duplication, it allows him to make a clone of himself that he may control.
To Be Added...