Due to being trapped in a molecular dissection chamber for a few seconds, White is blindingly white from head to toe, having pale skin and snow white hair. He's a rather large man with a forbidding expression.
White also has white armored battlesuit which he wears to protect himself from nanites and for combat purposes.
He seems to interrupt the communication of Black Knight with Caesar Salazar. He later appears in the Providence Defect Group Base with Rex, Holiday and Bobo to study the situation in which Agent Six was injured, after the explosion of Alpha. Later he is the only companion who helps Ben and Rex against Alpha, but is sent back to the Base for the risks that his armor is damaged and may be exposed to nanites.
Because of the sterilization chamber incident, White Knight is arguably "the only Pure Human left in the world", and would die if he was infected by Nanites. His bio-mechanical armor grants him protection against dangers and the infection of Nanites, this robotic armor gives him a higher resistance than normal. The armor is also well equipped with various weapons, including a yellow energy ray.