Mercenaries are privately-operated military groups for hire. This page describes covers the status of mercenaries in the SARPiverse.

In the Yamatai Star Empire, private military forces have been banned since the Military Centralization Act of YE 28. Private security forces are still legal so most groups of this type brand themselves as security contractors.

Historically, Ketsurui Chiaki (Daughter of Ketsurui Yui) worked as a mercenary.