Headhunters

Were you looking for:
 * Headhunters (Team), the titular two-man SPARTAN-III teams.
 * Headhunters, the short story which follows a SPARTAN-III Headhunter team.
 * Headhunter (Game Variant), a game variant that was originally intended for Halo 3, but made an appearance in the Halo: Reach Multiplayer Beta.