Fred was born Frederic Ellsworth on Ballast in 2511. At age 6, Fred was conscripted into the Spartan-II program, where he excelled at both close-quarters combat and as a marksman. Following Spartan-II training and augmentations, he became one of the original members of Blue Team, participating on dozens of missions throughout the Human-Covenant War. After the disappearance of the Master Chief during the Battle of Installation 00, Fred became the leader of Blue Team, which continued until the return of John-117 in 2557. Though Fred technically outranks him, the leadership role of Blue Team remains John’s as he has been the leader of the team since they were children.