LCDR Nicole "Wolf"-121 is a SPARTAN-II of the UNSC Special Warfare Command, attached to Special Warfare Group Three. Nicole is the second-in-command of SPARTAN Group December, an elite group of SPARTANs who fought during many high-risk operations, most notably however, during the Fall of Reach. Nicole is more specifically the sniper of Fireteam Dagger, her callsign being Dagger Two.