Head Gunner

Head Gunner is the name of two enemies in Mega Man X3.

Head Gunner masspro
Head Gunner masspro (ヘッドガンナー・マスプロ) is a mass-produced Head Gunner in Mega Man X3. It can only shoot missiles. This version of the Head Gunner replaces all Head Gunner customers once Blast Hornet's stage has been cleared.

Head Gunner customer
Head Gunner customer (ヘッドガンナー・カスタマー) is a customized Head Gunner in Mega Man X3. Unlike the mass-produced version, this one is equipped with a secondary set of guns and stronger armor.

Other Media
Both Head Gunner Customers and Masspro appear in the Rockman X (manga) interrputing X while he was fighting Crush Crawfish.