Who survived the Spartan ii program?

The Spartan-II program, developed by Dr. Catherine Halsey, produced several notable survivors, with the most prominent being Master Chief Petty Officer John-117. Other surviving Spartans include Kelly-087, Linda-058, and Fred-104. Throughout the series, these Spartans play crucial roles in the United Nations Space Command's fight against the Covenant and other threats. Their training and enhancements made them some of the most effective soldiers in the Halo universe.