Catherine-B320, also known as Kat, is a Spartan-III supersoldier featured in the Halo video game series, particularly 'Halo: Reach.' As the second-in-command of Noble Team, she is recognized for her intelligence, technical expertise, and strategic thinking. Kat is the team's communications specialist and is responsible for several critical missions on Reach. Despite losing her arm prior to the events of the game, she continues to serve valiantly, symbolizing resilience and leadership throughout the series.