Catherine-B320, Noble 2, or just Kat, was a Spartan-III member of Noble Team during the Fall of Reach. As a Spartan commando, she specializes in intelligence in the squad. She is known to be able to hack into any computer system (Human or Covenant), which is a great asset for other members of Noble Team. She and Carter-A259 are the only surviving members of the original Noble Team. She has a robotic right arm, and uses it to her advantage in both battle and programming.