The SPARTAN-IV Program created an entire new ensemble of SPARTAN supersoldiers. Of the SPARTAN-II's and SPARTAN-III's, the following are KNOWN without a doubt to be alive as of 2553.
- Admiral Serin Osman, ONI (Osman-019)
There are 17 SPARTAN-II's and SPARTAN-III's alive as of 2553.
There are great deal of SPARTANs who were listed as "MIA" without being confirmed "KIA," such as SPARTAN-II "Red Team" and "Team Black."